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Guide for Students to the IB Biology IA Format

Ah, the allure of the International Baccalaureate (IB) ! While involved with IB, I’ve noticed that mastering the IB Biology IA is no small feat. However, it’s not as intimidating as it might seem at first. This article reviews the essential IB Biology IA format and structure, sprinkled with insights from my years of experience.

When I first encountered the IB Biology IA, I was a tad overwhelmed. Yet, as I explored more, I realized its fundamental importance. So, what exactly is the IB Biology IA? It’s a key assessment piece for IB students that evaluates their experimental and investigative skills. Furthermore, proper format and structure can significantly impact your final grade. From my experience, laying a solid foundation is vital for success.

Critical Components of the IB Biology IA Format

The IA is a laboratory report that is an integral part of the IB Biology curriculum. For assessments through May 2025, this 6-12 page work should include a research question, detailed methodology, data interpretation, and a concluding section.

But to understand the intricacies of the IB Biology IA, we need to peel back the layers. In my years of experience, getting a grip on these elements has often been the turning point for many students.

So, understanding and perfecting these sections is instrumental in crafting a standout IB Biology IA . And believe me, with the right approach, it’s more than achievable!

Title Page and Research Question

The beginning is often the most crucial. Just as a book is judged by its cover, your IA begins its impression with the title page. It should be sharp and concise but comprehensive enough to provide an inkling of the direction of your investigation. Alongside, the research question is the backbone of your research, guiding every step. It’s paramount for it to be precise and well-defined, illuminating the research path for the reader. By the way, you can read more about the IB Internal Assessment format in our blog.

Introduction and Background

It is where you roll out the context, much like a red carpet for what follows. This section offers the essential backdrop, helping readers grasp the significance of your study. Going by the general IB criteria, it’s pivotal to elucidate the relevance and importance of your chosen topic here, providing a solid rationale for its investigation.

Personal Engagement and Exploration

This section is truly a window to your academic soul. It reveals your genuine interest, passion, and personal connection to the IB Biology topic . It’s a space to articulate why this particular topic resonated with you. Over the years, I’ve discerned that students who showcase genuine enthusiasm and curiosity here tend to elevate their IAs to a new level.

Methods and Materials

Venturing into the practical realm is where you lay out your experimental master plan. Document every apparatus, tool, and step taken during your research. The idea is to draft this section with such clarity and precision that anyone reading it could replicate your experiment seamlessly. 

So, the “Methods and Materials” section stands as your guidepost, shedding light on your experimental process. Here is an example of a step-by-step procedure:

• Preliminary Setup . Always start with how you prepared the lab space, ensuring all equipment was clean, sterile (if necessary), and within easy reach.
• Experiment Initiation . It could be preparing a solution, calibrating an instrument, or setting up the apparatus.
• Data Collection Phase . Describe in detail how you collected data, at what intervals, and using which tools. For example, “Using a calibrated pipette, I extracted 5ml of the solution every 10 minutes.”
• Safety Measures . Always document any safety protocols followed during the experiment, such as ensuring adequate ventilation or handling chemicals carefully.
• Experiment Conclusion . Detail how you wrapped up the experiment . It could include turning off equipment, safely disposing of materials, or storing data.
• Post-Experiment Cleanup . It is always a vital step to indicate how you restored the lab space to its original condition and how you stored or disposed of used materials.

The aim is to write this section thoroughly so that another student, perhaps halfway across the world, could read your description and carry out the same experiment with identical results. Clarity and meticulousness can raise your IA to a commendable standard.

Data Collection and Analysis

Ah, the realm of empirical evidence! As I’ve often reiterated in my interactions, this section forms the core of your IA. It’s where your observations and findings come alive. But numbers alone won’t suffice. Getting into analysis, identifying patterns, and drawing insightful conclusions is crucial. Precision and accuracy are the linchpins here.

Conclusion and Evaluation

This segment calls for introspection and a broad overview as we round off. Draw overarching inferences from your research, going beyond just stating the results. Understand the broader implications of your findings. Moreover, put on your critic’s glasses, judiciously assessing your study’s strengths while acknowledging its weaknesses.

Topics to Read:

• Understanding the IB Curriculum: A Beginner’s Guide
• Guide to the Official IBO Website for IB Student Advantages and Growth
• How to Manage Time Effectively as an IB Student
• How to Write a Strong IB IA Proposal?
• The Benefits of Pursuing the IB Diploma Programme
• What to Do if You Don’t Pass Your IB IA? How to Succeed Next Time?
• Can I Order IB Internal Assessment Written Online?

Tips for Excelling in Your IB Biology IA

The path to mastering the IB Biology IA can be challenging, but it can be a smooth ride with a few strategic pointers. Having been deeply involved with the IB for years, I’ve collected vital insights that can distinguish between a satisfactory and a stellar IA . Let’s get right into them.

1. Selecting a Relevant Research Question

The foundation of your entire IA is your research question. What’s the secret sauce to crafting the perfect one? It’s all about relevance. Ensure that your question aligns neatly with the biology syllabus.

From my numerous sessions and interactions, a research question that resonates well with the core curriculum often garners more appreciation. Finding that sweet spot between ambition and practicality is also pivotal. While aiming high is commendable, choosing a feasible question within your means and resources is crucial.

2. Prioritizing Accurate Data Collection

Data is the heartbeat of your IA. Precise collection is non-negotiable. Here’s a valuable piece of advice I’ve echoed throughout my years — always double, if not triple, check your data. A minor mistake can alter your results significantly. Consistency is vital in this aspect. Make sure your data collection methods are systematic, repeatable, and free of any biases.

3. Emphasizing Personal Engagement

It is where your unique touch makes a difference. The IA isn’t just about presenting facts but also about your connection and enthusiasm for the topic. Standout IAs often have a strong undercurrent of genuine interest and dedication. From my vast experience, when students infuse their work with sincere passion, it shines through, making the IA genuinely memorable:

• Initial Curiosity . Begin by shedding light on what piqued your interest in the topic.
• Challenges and Overcoming Them . Maybe you faced difficulty sourcing materials or grappled with a particular concept.
• Moments of Eureka . Highlight instances during your research when things clicked, or you experienced breakthrough moments.
• Personal Stories . You may have always been fascinated by plant biology because you used to garden with a family member, or perhaps a unique health challenge drove your interest in human biology.
• Reflections . Share your introspective moments. How has this research changed or deepened your understanding of the topic? How has it influenced your perspective or future aspirations in biology?

Remember, the personal engagement section is your canvas. It’s an opportunity to paint a picture of the researcher and the individual behind the research. By emphasizing these elements, you elevate the depth of your IA and create a resonant narrative that reviewers and readers can connect with.

4. Reflection and Evaluation of Your Findings

After all the rigorous work, it’s essential to pause and reflect. It involves not merely stating your results but also pondering their significance. How do your findings fit into the larger framework of biological understanding? Additionally, always be ready to assess your work critically. Pinpoint areas of improvement and suggest potential refinements. Such a holistic perspective adds depth to your IA and showcases your understanding and maturity.

Don’t let the stress of choosing an IA topic hold you back.

Are you struggling to come up with topic suggestions for your IB Internal Assessment?

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Common Mistakes to Avoid in IB Biology IA Structure

Over the years, I’ve seen students make the same mistakes. Let’s ensure you’re not one of them!

1. Skipping Peer Review and Feedback

In the thick of research and writing, it’s easy to become myopic and miss out on tiny errors or areas of improvement. That’s where a second set of eyes becomes invaluable. Peer reviews or feedback from mentors can offer fresh perspectives, identify overlooked mistakes, or even provide insights that can elevate the quality of your work. From my experience, students who embrace feedback often end up with more polished and well-rounded IAs.

2. Inconsistent Data Collection Methods

While the methodology might be sound, inconsistency in data collection can introduce significant errors. Maintaining uniformity throughout the data collection phase is crucial. For instance, if you’re measuring plant growth, ensuring that measurements are taken simultaneously, under the same conditions, can make a difference.

3. Neglecting the Significance of the Research Question

The research question is the north star of your IA. Sometimes, students opt for broad or overly ambitious questions, convoluting the research process. It’s essential to choose a question that’s both relevant and feasible, ensuring that it aligns with the IB Biology syllabus and is achievable within the scope of the IA.

4. Not Justifying Methodological Choices

Simply listing out methods isn’t enough. It’s crucial to explain why a particular way was chosen and its relevance to the research question. Offering a rationale can give depth to the methodology section and showcase a deeper understanding of the research process.

Conclusion: Perfecting Your IB Biology IA

The IB Biology IA format and structure might seem daunting initially, but it becomes manageable with the proper guidance and preparation. I believe that with dedication and focus, every student can succeed in their IB Biology IA. Remember, it’s a marathon, not a sprint. 

In conclusion, with the right approach and these strategic tips in your arsenal, the path to creating an impressive IB Biology IA becomes much more straightforward. Combine these insights with dedication, and you’re on your way to success! Here’s wishing you all the very best! And remember, you can always get help with IB Biology IA from our experienced writers.

Nora Spinster

Nora Spinster is a multi-talented individual who is an educator, lawyer, youth, expert IB tutor, education activist, and language and writing enthusiast. Nora has a wealth of experience in copywriting, having worked with various organizations and businesses to craft compelling and effective copy. Nora has published articles on young learners and teenage students in the International House Journal and occasionally posts on ibwritingservice.com educational blog

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12 Examples and Tips for IB Biology IA

May 4, 2022 | IB subjects

IA is one of the many things IB students struggle with, but some might feel that writing the IA in Biology is especially confusing since it covers broad topics. This post is for those who are having a hard time coming up with a topic, are worried about writing the IA in Biology overall, or are interested in Biology but not so sure about taking it because of IA. An overview of the subject IB Biology can also be seen in a previous post: Exam Strategy for IB Biology (HL/SL) .

1. Overview of Biology IA

Both HL and SL students are expected to write an IA ( Internal Assessment ) in Biology which accounts for 20% of the final grade . The IA in biology is expected to be a 6-12 pages long report about an investigation a student carries out based on their own hypothesis.

1.1 IA Criteria

HL and SL share the same IA criteria and it’s important to understand the criteria before and while carrying out the investigation for your IA. (Reference: Biology Teacher Support Material )

2. Examples of Biology IA Topics

Many IB graduates have kindly answered an online survey by MakeSensei and given examples of IA topics in IB Biology. Some of them are RQs (Research Questions), so you might want to see the pattern of how they make RQs for your future IA.

• What is the effect of exposure to different concentration of sodium chloride solutions for different duration time on the germination percentage, mean germination time, and relative injury rate of Ipomoea aquatica?
• Lactic acid experiment in milk
• What is the effect of sodium chloride concentration (0.0, 0.4, 0.8, 1.2, 1.6, and 2.0 %) on the rate of hydrolysis of 1.0 % starch solution by 2.0 % ɑ-amylase (Bacillus subtilis), measured as the rate of decrease in absorbance value (Au s–1), using Spectrophotometer Vis at 434.2nm?
• Protein-digestive enzyme
• What is the effect of fertiliser quantity on evening levels of dissolved oxygen in river water samples over a period of two weeks?
• An Investigation into the Effect of Different Types and Concentrations of Pesticides (Orthoran Acephate, Kadan Safe, Kadan Plus DX) on Seed Germination: Observing Plant Growth of ErucaSativa, Brassica Oleracea, Lepidium Sativum and Perilla Frutescens
• An investigation into the effect of sodium chloride on plant germination and its growth.
• (Title: How to make delicious natto) RQ: What is the effect of pre-soaking time of soybeans, 0.00, 3.00, 6.00, 9.00, and 12.00 hours (±0.05 hours), on the length of threads between separated fermented soybeans (natto) measured by a clear plastic ruler (±0.1cm)?
• Effect of light intensity on the travel activity of a Physella acuta
• Investigating the effect of concentration of the salt solution on germination and growth of cotton and spinach seeds
• Investigating the correlation of the length of knee roots of a mangrove and the number of holes crabs make in the given area
• Effect of temperature on denaturation of albumin protein

3. Tips for Biology IA

3.1 Set Appropriate Independent/Dependent Variables

In order to carry out the investigation with sufficient sample size and trials, there needs to be independent and dependent variables that are both appropriate in terms of the purpose of your investigation. If you want to find out the relationship between X and Y (how X influences Y), then your independent variable should be X and your dependent variable should be Y. Both variables should be measurable , meaning quantitative, to allow various statistical analyses. But having qualitative data is valued in discussion as well.

3.2 The More Data, The Better

It is known that you should have at least 25 samples of data for your Biology IA, but let us explain why. While having multiple trials is necessary for the investigation, each trial should also have multiple samples. Therefore, 5 trials with 5 samples each make up 25 samples in total. Having said that, your sample size is up to you, and having more than 25 samples would only make your data more robust . But make sure you have enough time and energy to process the whole data.

3.3 Use Appropriate Secondary Sources

Doing background research on the field you’re focusing on in IA is required to back up your hypothesis, discussion, and conclusion. A lot of people use secondary sources (sources that are not first-hand) and most often through the internet. But, using Wikipedia or personal blogs would not be appropriate for your IA because they may not be reliable, accurate information. Instead, you might want to use these websites to search for previous academic articles and journals.

• Google Scholar
• The World Factbook  (provides you data about the country of your interest)

3.4 Don’t Forget Annotations and Citations

• Annotations

An annotation is a short comment written near an image to give an explanation. Annotations are necessary when the image and its title don’t give enough explanation to specific objects in the image and your word count is limited. For example, when you’re showing your method with an image of instruments, readers might not understand why you chose those instruments to carry out your experiment. To avoid such inconvenience, annotations provide more detailed information than the title and the main text.

A citation is a short version of the reference to your source and it needs to be in-text or footnote. Every time you mention something that is not original or first-hand, you need to put citation(s) to prove where that statement comes from. If you miss citations, it will be considered plagiarism and you could fail the IB. Therefore, citations are important!! You could use  Citation Machine  to create a reference list and citation for each reference (check which style is preferred by your teacher).

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July 26, 2023

Ace Your Biology IA (HL): A How-to Guide

The Higher Level (HL) Biology Internal Assessment (IA) is a crucial component of the International Baccalaureate (IB) program. It allows students to delve deep into a scientific topic of their choice and showcase their research and analytical skills. In this guide, we will focus on the preliminary pages of the Biology IA, specifically the Title Page and the Content Page, which lay the foundation for a well-structured and successful IA.

Preliminary Pages

Generally, in a HL Biology IA , these pages refer to the Title Page and the Content Page. They come before the actual IA sections and write-up and usually do not require a page number.

Many IB students tend to place these pages on the last of their Biology IA to-do-list. However, we would advice that you do it first.

The Title Page is more than just a formality; it sets the tone for your entire IA. It should contain the following elements:

• Title (e.g. “A study investigating…”)

A clear and concise title that reflects the essence of your study, such as “A Study Investigating the Impact of X on Y as Shown by…”

• Research Question

It has to include both the dependent and independent variables.

• Relevant details such as the scientific name of the organism (if applicable), units, time, and location.

Content Page

The Content Page serves as an organized outline of your IA. It should include the following sections:

• Title and Research Question
• Introduction
• Background Information
• Variables (Independent, Dependent, Controlled, and Uncontrolled)
• Preliminary Experiment (with a focus on its relevance to the main experiment)
• Risk Assessment

Processed Data

• Analysis (including statistical calculations and graph details)

Bibliography

The IA Title and Research Question  

Identify a broad topic statement, ensuring that your research question is stated and includes both the dependent and independent variables. For example, What is the effect of X on Y as shown by… ? Your research question should include the following, where appropriate:

• The organism (if appropriate) has a scientific name

Including the following will allow you to effectively convey clarity in your research question , and thoroughly explain what you will be investigating .

Introduction and Background Information 

Introduction:

Your introduction is rooted in background information about the organism and or the topic that you will be investigating in your IA. You should demonstrate strong personal engagement by a statement of purpose.  For instance, you would avoid using cliche phrases such as “I have always loved..”, but rather opt for phrases that clearly illustrate your passion with the real, outside world, or your genuine reason for choosing the topic that you will be investigating.

Background info: 

Go on to enhance your understanding of your research question while ensuring that your background information is:

• Within context of the range of independent variables
• Within context of the dependent variables being used
• In-text cited, based on the referencing systems used in your school (e.g. Harvard/ MLA referencing) 
• Supported by a preliminary experiment through the inclusion of a short paragraph about how it was carried out, to show your clarity on how you would conduct your main experiment.

While conducting a preliminary experiment shows great engagement, many students do not do it/are not able to carry one out for various different reasons. If you have not carried out a preliminary experiment, research and describe the following instead :

• Range and intervals of your independent variables
• How you will be measuring your dependent variable

Null hypothesis : 

“The null hypothesis is a typical statistical theory which suggests that no statistical relationship and significance exists in a set of given single observed variables, between two sets of observed data and measured phenomena” (“Null Hypothesis – an Overview | ScienceDirect Topics”).

For example,

“There is no statistically significant association between X and Y .”

Alternative hypothesis : 

Your alternative hypothesis is an alternative theory that is suggested with direct polarity to the null hypothesis.

“There is a statistically significant association between X and Y .”

• Independent, dependent and controlled variables are clearly stated
• Ensure to have at least 5 intervals and at least 15 repeats for each interval
• Explain how and why you are using those variables, how certain variables may not be controlled, and how you minimise the effects of these to suit it to your experiment effectively

Ensure that all apparatus, chemicals and solutions are listed and / or shown in a diagram if relevant and all apparatus used are relevant. (Not an obligatory list, can be given in the method)

Preliminary Experiment 

The Preliminary Experiment is often overlooked, but it holds immense value in shaping your main investigation. Students can improve this section by linking it seamlessly to their IA. Describe how the preliminary experiment influenced your methodology, analysis, and decision-making process. If you haven’t conducted a preliminary experiment, research and discuss the range and intervals of your independent variables and the method of measuring the dependent variable.

Your method section demonstrates that you have sufficient data that has been collected, and that you have thoroughly reflected on each method of control.

Ensure to :

• Outline method in a step by step, list-like format
• Reflect on every controlled variable in the method while explaining
• State that you have : “Repeated method ____ for verification” at the end of every section.

Risk assessment to ensure safety

Include a risk assessment of apparatus and chemicals and show awareness of:

• ethical issues – eg handling of animals
• environmental issues – eg  impact on field sites

Once you have collected your raw data, the next step is to process and organize it for analysis. The Processed Data section is where you present your data in a structured manner, making it easier for readers to interpret and draw conclusions. Follow these steps to effectively present your Processed Data:

• Data Organization Begin by organizing your data in a clear and systematic way. You can use tables, charts, or graphs, depending on the type of data you collected. Ensure that each piece of data is properly labeled and includes units, where applicable.
• Data Manipulation In some cases, you might need to manipulate the data to calculate specific values or derive meaningful insights. Show your calculations and formulas used for any data manipulations, and explain the rationale behind these transformations.
• Averaging and Standard Deviation When presenting numerical data, consider calculating the averages and standard deviations if relevant. These statistical values provide insights into the central tendency and variability of your data points.

The Analysis section is where you interpret your processed data and draw meaningful conclusions from your findings. To conduct a comprehensive analysis, consider the following steps:

• Statistical Calculations Based on the nature of your data, choose appropriate statistical calculations to support your analysis. Depending on your research question and data type, you might use measures like mean, median, mode, range, standard deviation, t-test, chi-square test, etc. Mention the statistical methods you used and why they are appropriate for your investigation.
• Graphs and Visualizations Graphs and visualizations are powerful tools to represent your data visually. Create clear and accurate graphs that effectively illustrate the trends, patterns, and relationships present in your data. Choose appropriate graph types, such as bar graphs, line graphs, scatter plots, or pie charts, based on the variables you are analyzing.
• Data Interpretation Thoroughly interpret the patterns and trends depicted in your graphs and statistical results. Explain the significance of any relationships observed and how they relate to your research question. Use evidence from your processed data and refer to relevant scientific principles to support your interpretations.

Ensure that your analysis section includes sufficient correlated qualitative and quantitative  observations, anomalies that have been clearly pointed out and explained, statistical tests and graphs that explain the data collected.

The figure below is an example graph taken from a model IA, where the student has clearly presented information in a graph.

In the Evaluation section, critically assess your investigation and methodology. Address strengths and weaknesses, reflect on potential sources of error, and suggest improvements for future studies. Consider the following points for a well-rounded evaluation

• Methodological Considerations Discuss any limitations or challenges you encountered during your investigation. Analyze how these factors might have influenced your results and propose ways to mitigate potential errors.
• Reliability and Validity Reflect on the reliability and validity of your data and methods. Identify factors that could have impacted the accuracy and generalizability of your findings.
• Sources of Error Be honest about any sources of error that might have affected your results. Consider experimental errors, sample size, or unexpected external factors that could have influenced your outcomes.

Evaluation : 

• Conclude by making explicit reference to the research question. In other words, your conclusion should directly answer the question : “Does the data answer the Research Question?”
• State if your null hypothesis is accepted or rejected
• Refer to the graph and data points to clearly demonstrate your understanding and strong conclusion
• Compare the conclusion with published data and predictions 

( A good tip here is to put your graph in and next to it put a graph from a textbook or website. Can you either explain any differences or relate it to scientific theory?) 

• Strengths and weaknesses of your investigation
• Further extensions that could have been carried out. 

Figure 1 : Model student IA graph 

The Conclusion section is where you summarize your key findings and directly address your research question. Follow these steps for an effective conclusion:

• Restate the Research Question Begin by restating your research question to remind readers of the central focus of your investigation.
• Answer the Research Question Clearly state whether your research question was supported or rejected by the evidence presented in your analysis. Use your processed data, statistical calculations, and graphs to support your conclusion.
• Relate to Scientific Theory Connect your findings to established scientific principles or theories. Discuss how your results align with existing knowledge in the field of biology.

Finally, provide a comprehensive list of all the sources you used in your research. Include academic papers, textbooks, websites, and any other references you consulted. Use the appropriate citation style, such as Harvard or MLA, as required by your school or institution.

Sample IA marked and annotated :

http://xmltwo.ibo.org/publications/DP/Group4/d_4_biolo_tsm_1408_1/pdf/investigation_1b_e.pdf

If in doubt, reach out to experienced tutors at Quintessential Education for extra help and guidance. Start your journey towards academic success today!

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Empowering Minds, Exploring Life

Biology IA Examples: Exploring Interesting Projects

Biology Internal Assessments (IAs) are not just a part of the IB curriculum; they’re a golden ticket for students to dive headfirst into the fascinating world of scientific exploration. In this comprehensive guide, we’ll walk you through a variety of interesting Biology IA examples that go beyond the classroom, providing students with hands-on experiences that are both educational and fun.

Investigating Enzyme Activity:

Enzymes, those microscopic heroes in our cells, make biochemical reactions happen. For an engaging IA, students can explore how external factors influence enzyme activity. This might involve experimenting with varying temperatures to observe the effects on catalase activity in liver cells. By understanding these nuances, students not only unravel the complexities of enzymes but also gain insights into real-world applications.

Examining Plant Growth Responses:

Plants, often underestimated, are incredible organisms with complex growth responses. In a captivating IA project, students can experiment with different concentrations of plant growth hormones to decipher their impact on bean plant growth. This isn’t just about playing with plants; it’s a chance to uncover the regulatory mechanisms that govern plant development and growth.

Studying Microbial Growth:

Microbes, though tiny, wield substantial power in the biological landscape. IA projects focused on microbial growth open up a realm of possibilities. For example, investigating how antibacterial agents affect the growth of Escherichia coli or studying the influence of environmental factors on mold growth on bread provides valuable insights. These explorations not only contribute to our understanding of microbes but also have practical implications in fields like medicine and food safety.

Investigating Genetic Inheritance:

Genetics , the code of life, is a playground for exciting IA projects. Students can delve into genetic traits using model organisms like fruit flies, unraveling the principles of inheritance. Alternatively, exploring the distribution of blood types in a specific population unveils the intricacies of genetic inheritance. These projects not only enhance genetic literacy but also allow students to actively contribute to ongoing genetic research.

Analyzing the Impact of Environmental Factors

Ecology comes to life in IA projects examining the relationship between organisms and their environment. By experimenting with environmental factors such as pollution or habitat changes, students can uncover their impact on population dynamics. A compelling IA might involve studying the effects of different pollutants on the growth of aquatic microorganisms, providing valuable insights into the delicate balance of ecosystems.

Investigating Human Physiology:

Our own bodies are a treasure trove of mysteries. IA projects in human physiology can focus on systems like the heart, lungs, or senses. For instance, studying the effects of exercise on heart rate or exploring the connection between taste perception and genetic variations offers a window into the intricate workings of the human body. These projects not only deepen our understanding of human biology but also have implications for health and well-being.

Conclusion:

Biology IAs offer more than just grades; they offer a chance for students to actively engage with science. The examples explored in this guide highlight the vast possibilities within the realm of Biology IAs, showcasing how students can not only grasp theoretical concepts but also contribute to the broader scientific community. As students embark on these investigative journeys, they’re not just students – they’re budding scientists uncovering the mysteries of the biological world.

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IB Biology IA ideas (30+ topics) - A Goldmine You Can't Ignore.

Unleash your potential in IB Biology with our exclusive list of 30+ captivating IA ideas! Discover the secrets to scoring top marks & nail your IA now!

Table of content

Sitting in that quiet corner, sipping hot chocolate, hoping it rains IB Biology IA ideas, instead, going blank and utterly confused?

We don't want that to happen, do we? 

Choosing the perfect IB Biology IA idea is only the first step in making one's IB Biology Investigation, but definitely, the most significant. IB Biology IA Ideas won't strike out of the blue, but here's a list of  30+ IB Biology IA ideas  to inspire and stimulate your grey cells! Selecting an IBxq Biology IA idea has always been challenging! 

Before we look for IB Biology IA ideas, let's clearly comprehend the  IB Biology Diploma Programme Subject , its objectives, partwise breakdown, and what IB expects of you.

The IB IAs are essential to one's overall subject performance since they make up 20% of the final score. Internal Assessments are the perfect way to get students to put their knowledge to use by Observing, Questioning, and Investigating.   Personal engagement ,  Exploration ,  Analysis ,  Evaluation ,  and   Communication  are the criteria against which the investigation is assessed.            

The sure-shot way to ace one's IB Biology IA, or any IA, is by picking a topic that sparks one's interest. A well-planned , structured, and executed  IA has been undertaken with zeal and enthusiasm. It is all the same when choosing that one Biology IA idea from a platter full of inspiration. 

Before we dive more in-depth, you should check out our  premium IB Biology SL Notes  to own your Biology SL papers! Along with a bundle of  Past Papers , these  premium SL notes  include guides for your  Extended Essay  and  Internal Assessments  with helpful examples! You certainly want to take advantage of these! Browse  these  for more information! 

When it comes to selecting from several IB Biology IA ideas for your investigation, it is essential to note that your IA would either require you to:

• Carry out experimental research in the laboratory or
• Draw interpretation from a credible database or
• Make a detailed analysis using a simulation/modelling.

Either way, you must connect to your topic and portray personal engagement as it lays the foundation for the rest of your investigation. Proper research is a bare minimum, and the rest follows. Here's a quick summary of how you are supposed to choose an appropriate IB Biology IA idea for your report:

• Know your interest:  Go through several IA ideas to understand what all topics are in sync with the IB Biology curriculum and if something grabs your attention, hold on to it!
• Keep it specific:  The idea should be more generic and more complex. An ideal IA idea reeks of originality and leaves room for proper investigation and analysis.
• Let it be realistic:  Outline the Equipment, time, and resources to check its feasibility.

Tada! There you go! 

Now that you know how to settle on that one perfect topic, let's quickly brief ourselves on the proper planning and procedure involved in the making of an IB Biology IA:

Concise Research Question:  

Your Research Question and the Aim of the Investigation are separate sub-headings with different implications. Keep the research question brief and relevant. The Aim answers Why while the Research Question answers the What.

• It is essential to set the Research Question in the background of the chosen topic. My Background, IB expects you to briefly explain what encouraged you to select a particular topic and, hopefully, a personal story that validates your choice and engagement. For instance, if you choose to investigate how light levels affect the predation of peppered moths, you could set a background that you have gained a fascination for that species ever since it was introduced to you for some explanation in your regular classes and eventually give more scientific basis for your choice.
• Independent, Dependent variables need to be highlighted, as should the hypothesis. State your hypothesis; it is important in the context of your research. Constraints, if any, need to be mentioned as well. Remember, the Independent variable is one that you are allowed to change(just one); the Dependent variable is one that you measure as it changes with the Independent variable; all the other experiment conditions must be kept constant to ensure that the experiment is fair.
• The procedure used should be well structured.
• Tables, Graphs, etc., should be used.
• Perform the relevant analysis, consider the research question, and conclude. 
• Limitations and Improvements should be specified.

Acknowledging the safety protocols established by IB and considering the ethical aspects of your investigation is imperative. 

Focus on the question:

"If there are any ethical implications to your report, how do you plan on minimizing the environmental impact of your experiment?" 

Citing documents/web pages and giving references is another crucial aspect of your IA that needs to be taken care of. 

An important thing to note here is that although you are allowed to take inspiration from existing research, papers/journals, you are expected to give a novel perspective to the idea while producing it in your investigation.

For example, an idea inspired by how the soil pH affects seed germination could be investigated in a new light; think of other factors controlling/affecting seed germination. You could progress further in your report with a focus on quantitative data.

With all the necessary information at your disposal, it is time to present some fantastic IB Biology IA ideas to encourage you to put your thinking caps on and take on the challenge with newfound zeal! These ideas are meant to give you a little head start along this path; your final IB Biology Investigation idea is your interpretation of one.

Without further adieu, let's dive headfirst into  30+ IB Biology IA ideas  for your Biology IA Investigation!

• Reference to Course:   Molecular Biology  (Metabolism, Cell Respiration, Photosynthesis)
• Lab, Simulation-based
• Reference to Course:  Molecular Biology (Metabolism, Cell Respiration, Photosynthesis)
• Experimental 
• Reference to Course:  Cell Biology (Membrane Structure)
• Experimental
• Reference to Course:  Plant Biology
• Reference to Course:  Molecular Biology (Enzymes)
• Reference to Course:  Cell Biology
• Simulation/Modelling
• Reference to Course:  Cell Biology (Osmosis)
• Database based
• Reference to Course:   Molecular Biology (Enzymes)
• Reference to Course:  Ecology
• Reference to Course:  Microbiology
• Reference to Course:  Molecular Biology(Enzymes)
• Experimental, Simulation-based
• Reference to Course:  Buffers
• Reference to Course:  Human Physiology
• Reference to Course:  Molecular Biology(Enzymes)
• Simulation Analysis
• Database, Experimental
• Reference to Course:  Plants Physiology

These ideas are for you to start exploring and begin! Take inspiration from these and research further to land on that one idea that gets you going!

But is that it? Certainly not! 

Here are a couple of other ideas you could browse and eventually take inspiration from:

• Effect of Different Fertilizers on  Eutrophication .
• Analyzing Milk Spoilage under varying conditions of Temperature, Sunlight, etc.
• Exploring how a particular variable affects the  germination of seeds .
• Investigating the rate of oxygen production of seaweed with variation in light intensity.
• To prevent microbial growth, explore better ways to clean household items(for example - mats).
• Studying the effect of temperature on photosynthesis in Green Gram(Vigna Radiata).
• Understanding what effect different ethanol concentrations have on cell membranes.
• Studying the biology behind  Schizophrenia .
• Investigating the decay time of different  Genetically Modified Foods .
• Understanding the impact of different variables on vegetable decay/ Exploring other methods to prevent vegetable decay.

And that's that!

These little ideas will help you brainstorm and explore further the vast yet intriguing expanse of biology. IB Biology curriculum expects you to appreciate scientific problems in a global context with stimulating opportunities, and IB Biology IAs help you accomplish just that. It might seem like a lot of work, but with the right topic, you will surpass your expectations! On this note, we wish you all the very best for your IB Biology IA Journey :)

Want some A-quality guidance? Look no further; at Nail IB, we have assembled premium content for you to ace your IBs, and you should check out our resources for a smooth IB experience. Click  here  for top-notch IB resources or to assess how your prep is going! 

This article will be a foundation for you to get going on that IB Biology IA Investigation of yours!  

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• Biology IA topics

Biology Internal Assessment is a crucial component of the International Baccalaureate Biology course, and it requires students to conduct independent research on a topic of their choice. This task aims to assess students’ understanding of scientific research and their ability to apply scientific concepts and principles to a real-world problem. In this article, we will explore some Biology IA topics that students can consider and provide some tips on how to choose the best topic for their research.

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Tips for Choosing a Biology IA Topic

Choosing a topic for your Biology IA can be a daunting task, but it can also be an exciting opportunity to explore a topic that you are passionate about. By following a few tips, you can select a topic that aligns with your interests and capabilities.

First and foremost, consider your interests when selecting a topic. Think about the aspects of biology that you find most interesting, whether it be human health, genetics, ecology, or biotechnology. By choosing a topic that you are passionate about, you are more likely to be motivated and engaged throughout the research process.

Additionally, it is important to consider your strengths when selecting a topic. Perhaps you excel in data analysis, writing, or conducting experiments. By selecting a topic that aligns with your strengths, you can leverage your skills to conduct high-quality research.

Another important factor to consider is feasibility. The topic you select should be feasible and manageable within the given time frame. It is essential to choose a topic that is specific, clear, and well-defined, which will make the research process more manageable. Additionally, the topic should be practical and achievable with the resources available, including time, equipment, and financial resources.

Consider the resources that you have access to when selecting a topic. This includes laboratory equipment, literature, and financial resources. If you are conducting an experiment, it is important to ensure that you have access to the necessary equipment and materials. If you are conducting a literature review, ensure that you have access to relevant scientific articles and journals. Furthermore, consider the cost of conducting research and ensure that you have access to the necessary financial resources.

Finally, when selecting a topic, consider the research questions that you will be investigating. A good research question is one that is specific, testable, and relevant. A good research question will allow you to conduct a study that is feasible and manageable, while also providing interesting and insightful results.

Examples of good research questions include those that involve a comparison, a cause and effect relationship, or a prediction. A comparison question might investigate the differences between two groups or conditions, such as “What is the effect of different types of fertilizer on plant growth?” A cause and effect question might investigate the relationship between two variables, such as “What is the effect of temperature on the metabolic rate of insects?” A prediction question might investigate the potential outcomes of an intervention or change, such as “What is the effect of a new drug on the progression of a disease?”

List of Biology IA Topic Ideas

When it comes to selecting a topic for your Biology IA , the possibilities are endless. If you are struggling to come up with a topic, here are some examples of potential Biology IA topics that you can consider based on your interests and strengths.

Topics related to human health and disease

If you are interested in human biology, you may want to consider investigating the effect of different diets on blood sugar levels. You can compare the effects of high-sugar, low-sugar, and low-carbohydrate diets on blood glucose levels. Alternatively, you can investigate the effectiveness of natural remedies on curing acne. There are several natural remedies that are believed to be effective in treating acne, such as tea tree oil, honey, and aloe vera. You can compare the effects of these remedies with over-the-counter acne treatments. Another topic to consider is the impact of exercise on heart rate and blood pressure. You can investigate the effects of different types of exercise on heart rate and blood pressure, such as aerobic exercise, weight training, and yoga.

Topics related to genetics and evolution

If you are interested in genetics and evolution, you may want to investigate the inheritance of traits in fruit flies. Fruit flies are commonly used in genetics research since they have a short lifespan and reproduce quickly. You can investigate the inheritance patterns of different traits, such as eye color or wing shape. Alternatively, you can investigate the genetic basis of inherited diseases. There are several inherited diseases that are caused by mutations in specific genes, such as cystic fibrosis or sickle cell anemia. You can investigate the effects of these mutations on the body and potential treatments. Another topic to consider is the impact of environmental factors on the expression of genes. You can investigate the effects of different environmental factors, such as temperature or light, on the expression of genes.

Topics related to ecology and the environment

If you are interested in ecology and the environment, you may want to investigate the impact of pollution on plant growth. You can expose plants to different levels of pollution, such as air pollution or water pollution, and measure the effects on plant growth. Alternatively, you can investigate the effect of different soil types on plant growth. Different types of soil have different nutrient levels, water retention, and pH levels, which can affect plant growth. Another topic to consider is investigating the impact of light pollution on animal behavior. Light pollution can disrupt animal behavior, including sleep patterns, foraging, and mating.

Topics related to biochemistry and biotechnology

If you are interested in biochemistry and biotechnology, you may want to investigate the effectiveness of antibiotics on different strains of bacteria. Antibiotic resistance is a growing concern, and it is important to investigate the effectiveness of different antibiotics on different strains of bacteria. Alternatively, you can investigate the effect of different concentrations of enzymes on the rate of reaction. Enzymes are critical in biological processes, and different concentrations can affect their efficiency. Another topic to consider is the use of biotechnology to produce a novel protein. Biotechnology has enabled the production of several novel proteins, including insulin and human growth hormone. You can investigate the production of a novel protein using biotechnology.

Other unique or interdisciplinary topics

Finally, there are several unique or interdisciplinary topics that you can consider for your Biology IA. For example, you can investigate the use of algae as a biofuel source. Algae are a promising biofuel source since they can produce high levels of lipids, which can be converted into biofuels. Alternatively, you can investigate the impact of music on plant growth. There are several studies that suggest that music can affect plant growth, and you can investigate this further. Another topic to consider is the effect of temperature on the metabolic rate of reptiles. Reptiles are cold-blooded animals, and their body temperature is regulated by the environment. You can investigate the effect of different temperatures on the metabolic rate of reptiles, which can have important implications for their survival in changing environments.

When selecting a Biology IA topic, it is important to consider your interests, strengths, feasibility, and the potential research questions. By choosing a topic that aligns with your passions and capabilities, you can conduct a successful research project that showcases your scientific knowledge and research skills. These Biology IA topic ideas are just a starting point, and you can tailor them to your interests and research goals. Remember to be creative and innovative when selecting a topic and have fun exploring the exciting world of biology!

Selecting the best Biology IA topic can be a challenging task. However, by considering your interests, strengths, feasibility, and the potential research questions, you can choose a topic that aligns with your passions and capabilities.  By using the resources available through the IB writing service , you can learn valuable writing skills and improve your overall academic performance.

This article provided some Biology IA topics that students can consider and some tips on how to choose the best topic for their research. By following these tips and exploring different topic ideas, students can conduct a successful Biology IA project that showcases their scientific knowledge and research skills.

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When selecting a topic for your IB Music Internal Assessment, both SL and HL students face a unique set of challenges and opportunities. As a seasoned IB educator with years of experience guiding students through this process, I’ve come to recognize the importance of choosing a topic that aligns with the IB criteria and resonates with your musical interests and strengths.

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• Annotating IA Investigations
• The Investigation

Once students have finished their Individual Investigation that's it! They won't complete another assessed experiment during their IB and this makes me consider the way I annotate the investigations while I'm marking them.  That is not to say that experiment skills will not be assessed in section A or paper 3, or in the data analysis questions. But it does mean that there is little benefit in pointing out student errors in the final marking of the investigation.

I begin with the plan or the first draft which is discussed with students & annotated by the student themselves as a guide to the their next steps. As teachers we are expected to support and guide students in their choice of topic or the type of experiment.

Secondly there is a first draft which I annotate to help students spot problems and things to improve. We are allowed to give general guidance and point out statements in the marking criteria which haven't been addressed. The IB guides says,"teachers should read and give advice to students on one draft of the work. The teacher should provide oral or written advice on how the work could be improved, but must not edit the work."

The final draft is the copy of the investigation which ends up on the screen of the moderator.  I put comments addressed to the moderator on this work explaining why I think the student deserves a certain grade. Like the the comment shown above.  Words from the grade descriptors are OK but it is even better to mention specific things in the work as well.

The moderator is an important person who I want to understand that I have understood the marking criteria correctly and that the students' work meets the criteria for the marks I have awarded.  We are all human I can miss things and so can the moderator, so I want to help make the important decisions visible.

It's too late for the students and these comments don't help the moderator.

The student may be frustrated that they can't do anything about these errors.

Where to annotate ?

Many teachers probably use a rubric or a marking sheet (e.g. IA Investigation - marking sheet) to summarise the comments and decide the mark.  This is a really useful summary tool for the teacher marking and everyone has their preferred style. Comments explaining how the judgments were made will help the moderator too.  However, I think it's easier for the moderator if my annotations appear in the students work itself next to the evidence.

It is possible to annotate word documents easily like this, shown above.  Adobe reader has some very good commenting functions now for pdf files and I think that Google docs work well too, although I haven't used Google docs for investigations myself. Chris Hamper ( Inthinking Physics site author) uses callouts rather than comments in Google classroom on a Google doc for drafts. These Google callouts are hidden in the final version which is saved as a pdf and comments to the moderator are added to the pdf.  Chris uses Foxit but it is also possible to annotate a pdf using Adobe acrobat reader.

This is an example of a pdf annotation made with acrobat reader. Of course you can choose the colour and font size.

Handwritten comments, when they are easy to read, have the advantage of being closer to the work and the marking is perhaps a little quicker, but remember the time you will spend scanning and uploading the work later.  I'd recommend that students use a wider line spacing or double spacing between paragraphs to leave space for written comments. This is already required for the Extended essay, and TOK essays.

For all comments I would recommend using code letters which refer to the assessment aspects to which the comment refers and also a number or a range of numbers which show the mark thought justifiable for this particular point. This way it is easy to scan the work for all comments which highlight all the supporting evidence for each mark awarded, eg. Exploration (EX:)

For example;

• "PE:2 Student shows a genuine interest, including creativity in the use of DIY apparatus in the method", 
• "EX: 3/4 relevant background info",
• "A: 5/6 sufficient raw data - supports a detailed conclusion",
• "EV: 1/2 An outline conclusion supported by data but incomplete",
• "COM: 1/2 The labeling on tables & graphs missing detail, impossible to understand". 

Once finished marking a section I look at all my annotations with their grade estimates and decide an overall grade for each section.  If it is clear the moderator will be able to do the same thing.

I have a simple summary sheet with extra notes scribbled all over it to help me to remember all the aspects which need to be considered for each section and you can find a copy of a similar summary here: IA Investigation - marking sheet

Personally I would avoid using software which puts a small icon next to the work and a list of comments at the end of the investigation. The moderator will have to make quite an effort to reconnect the comments to their specific places in the work.

If we can help the moderator, who is working hard at their computer reading through the script and trying to decide whether our judgments are in line with the senior moderator, they will be more likely to moderate our work well and in a better position to give us clear feedback of any discrepancies between our marking and the senior moderator.   Of course the best source of advice for these details will be the Chief examiner's report which is published on the OCC.

Thanks to Geoff Neuss ( Inthinking Chemistry site author) and Chris Hamper ( Inthinking Physics site author) for their helpful comments on this page.

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Biology IA Topics: 20+ Great Ideas to Get You Started

by  Antony W

September 5, 2022

There’s nothing worse than trying to brainstorm and search for Biology IA topics only to come out empty.

The problem is:

There’s a lot to explore in Biology that it proves challenging to determine what topic would be suitable to investigate from the hundreds of possible options. So if you’re having a difficult time figuring out what topic to explore, we can understand.

In this post, we’ll share a list of the best IB Biology IA topics that you can use either for inspiration to help you come up with a topic of your own or as a modified topic for further research.

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IB Biology Internal Assessment (IA) Topics

Coming up with an IB Biology IA topic to explore isn’t difficult if you understand the requirements. Like Physics and Chemistry ,  your IA in Biology must focus on scientific writing and research in the Biology subject.

Below is a list of 30+ topic ideas for Biology Internal Assessment:

• Assessment of the effect of temperature on the vitamin C content of various juices
• What effect can quick shifts in body posture have on baroreceptor feedback and pulse rate?
• How do detergents, drinks, yogurt, and milk stack up when it comes to buffering?
• How does the ideal pH affect the growth rate of pinto and green beans? Proven Through Experiment
• The temperature dependence of the activation energy released during the decomposition of H2O2 utilizing the catalase enzyme and aluminum inhibitor as catalysts.
• To what extent does organic household waste affect the germination and emergence of tomato seeds?
• Investigating the Role of Carbonated Drink Volume and pH in Tooth Erosion/Decay
• In vitro Studies of Aluminum Chloride's Effects on the Liver Catalase Enzyme's Degradation of Hydrogen Peroxide
• Changes in seashell mass and carbon monoxide (CO) emitted during the reaction as a function of HCL concentration
• Does river pollution threaten the source of water for marine life?
• Fruit ripening as influenced by environmental factors including light and temperature
• How can we evaluate the respiration rates of wine yeast and baker's yeast in various sugar solutions?
• What happens to DNA movement as the concentration of the agarose gel changes?
• Compare the top and bottom 25 nations in terms of HDI and their rates of lung cancer-related mortality using secondary data.
• How does body mass index (BMI) affect the skin's surface temperature and the pace at which it recovers after exposure to cold?
• Hydrogen peroxide breakdown rate influenced by presence of various metal ions (H,O.).
• Using the Silver Nitrate titration method, how much variation exists between the chlorine concentrations (mg / L) of several locally accessible brands of treated water?
• How post-workout use of energy drinks affects cardiovascular function and blood pressure
• How do energy drinks affect blood pressure and heart rate following exercise?
• How do varying amounts of lactases affect the efficiency with which lactose and other disaccharides in milk are digested?
• Is there a correlation between the presence of home furnishings and stunted plant development?
• In terms of the pace of hydrochloric acid neutralization, as assessed by the difference in change in pH levels in 5 minutes, how do cumin and turmeric powder compare to indigestion tablets?
• What effect does zinc chloride concentration have on plaque development?
• What happens to the length of Citrus limon roots as the Oxytetracycline concentration is raised from 5 mg/L to 10 mg/L?
• Is there a correlation between the pH of spoiled milk and the temperature at which it was stored?
• How can the opposing effects of temperature and light intensity on the time it takes for photosynthesis to occur cancel each other out?
• How can the acidity of certain drinks contribute to tooth decay?
• What happens to your heart rate if you suddenly start working out hard, and how much of an effect does warming up have on your maximum heart rate
• How effective are natural antiseptics such as ginger and turmeric compared to store-bought alternatives?
• How potent are synthetic antibacterial treatments in comparison to natural antibacterial remedies?
• What effect does sodium chloride have on bougainvillea seed germination at various concentrations?
• What effect does soil composition have on the propagation of a plant's offshoots?
• How much does the amount of sodium nitrate powder used to preserve meat reduce its quality?
• For what reason does moringa seed and leaf extract (herbal medication) inhibit the growth of dandruff-causing Malassezia yeast (Pittosporum)?
• Which laundry detergent is best in breaking down lipids and getting rid of stains?
• When it comes to radishes, how does the salinity of the water effect their development rate?
• Does Gibberellic acid influence dolly Parton rose germination, and how does it react at various concentrations?

Assessed internally and moderated externally by the IB, Biology IA at SL and HL accounts for 25% and 20% of the final grades respectively. Your teacher will assess your work out of 24 based on well-defined assessment criteria. As such, you should work on a topic that you can explore comprehensively within the scope of the assignment.

Final Thoughts

The IB Biology IA assignment isn’t as lengthy as the extended essay in the same subject, but it can be quite involving. You’ll conduct extensive experiments and the writing process is going to be somewhat longer.

To have an easy time working on the subject, it’s best to choose a topic that interests you, so you can focus on an area that you’ve always wanted to explore.

Given that we’ve shared over30 topic ideas with you, you shouldn’t have a difficult time figuring out what to work on.

About the author 

Antony W is a professional writer and coach at Help for Assessment. He spends countless hours every day researching and writing great content filled with expert advice on how to write engaging essays, research papers, and assignments.

50+ IB Biology IA Ideas

Request free trial class, ib biology sl ia ideas.

The IB Biology SL Internal Assessment (IA) is a project that requires students to complete an independent research project on a chosen theme. The IA is worth 20% of the final assessment and is an opportunity for students to showcase their understanding of the subject. Here are some carefully curated IB Biology SL IA topic ideas to help students get started. These ideas have been tried and tested and are popular with examiners. The list includes the basic reasons for investigating each topic, possible independent and dependent variables, and the experimental setup. It’s important to consider if the topics can be applied to one’s own life, as this shows personal engagement.

1.) How do different sodium chloride concentrations affect seed germination in the bougainvillaea plant?

Experimental setup:.

Soak the bougainvillaea seeds in sodium chloride of varying concentrations for a specific time period. Place them in Petri dishes and count the number of seeds that germinate. Conduct at least 5 trials, excluding control. 

Independent Variable:

Sodium chloride concentrations

Dependent Variable:

Seed germination percentage

2.) How does extract of the seeds and the leaves of the moringa plant (herbal medicine) show antifungal activity against the Malassezia yeast (Pittosporum) fungi?

Experimental setup: , mix yeast and herbal medicine. then use agar plates and fungus to test their effectiveness by seeing how many fungi grow in the different plates. , independent variable: .

Seeds and the leaves of the moringa plant

Dependent Variable: 

Antifungal activity

3.) How does the concentration of zinc chloride affect the growth of plaque?

Mix different concentrations of zinc chloride in different agar plates and bacteria, and check for plaque formation over time. 

Concentration of zinc chloride

Growth of plaque

4.) How effective are synthetic antibacterial products compared to natural antibacterial products against the growth of Cut bacterium acne?

Chose a synthetic and natural antibacterial product and mix them with a little water to create diluted solutions of them. Then use agar plates and bacteria to test their effectiveness by seeing how many bacteria grow in the different plates.

Types of antibacterial products (Natural vs synthetic)

Growth of Cut bacterium acne

5.) How do the different teas, used to water Vignata radiata seeds, affect the germination rate?

Place Viganata radiata seeds into various Petri dishes of the same number. Water them regularly using a diluted solution of different types of teas. Count the number of seeds that germinate over time and take note. Repeat the same procedure 5 times, including control. 

The different types of teas (green tea, chamomile, etc)

The rate of germination of Vignata radiata

6.) How do varying salinity levels affect the rate of germination in the grass species Spartina anglica and Eragrostis plana?

Use different concentrations of salinity levels in petri dishes with the two different grass species and compare the rate of gemination over a period of time. Repeat for five trials.

Salinity levels

Germination rate

7.) What is the effect of potassium ion concentration (ppm) on the initial (day 0 to day 2) rate of growth of Hygrophilla difformis through mass change per day (g/day) over a period of 1 week?

Use various concentrations of potassium in the soil in which the hygrophilla difformis has been planted to asses rate of growth over 1 week. compare the different pots containing varied concentrations to conclude on the optimum level..

Potassium concentration

Rate of growth

8.) Effect of different concentrations of fertilisers on growth of Solanum lycopersicum?

In various pots (atleast 5) containing Solanum lycopersicum, add varied levels of fertiliser concentration and assess rate of growth over a period of time.

Fertilizer concentration

9.) Effects of the addition of different concentrations of 11% humic acid and 5% fulvic acid on rate of growth and fruit development in Solanum lycopersicum L?

Take the required number of pots, and add humic and fluvic acid to Solanum Lycopersicum in soil of varying concentrations and asses the rate of growth over and fruit development over a fixed period of time. Compare the different pots containing varied concentrations to conclude on the optimum combination.

Mixture of humic and fulvic acid

Rate of change of the height of the plant

10.) To what extent does light intensity affect the concentration of sucrose within a kiwi?

Exposing samples of kiwi concentrate to different light intensities for certain periods of time and measuring their sucrose concentrations before and after.

• Light Intensity

Sucrose Concentration

11.) Effect of Potassium concentration on the growth rate of Raphanus sativus (Radishes)?

Planting and growing radishes within the same type of soil of different potassium ion concentrations.

Potassium Ion Concentration

Length of shoot and root of Raphanus sativus

12.) Effect of temperature on the concentration of Vitamin C within various citrus fruits?

Extracting different citrus fruit concentrates such as grapefruits, oranges and lemons and heating these samples at different temperatures for a certain duration and measuring their Vitamin C concentration before and after.

Temperature

• Citrus Fruits

Vitamin C Concentration

13.) Investigating the effect of different light intensities and frequencies on the rate of photosynthesis in Spinacia Oleracea.

Exposing samples of Spinacia oleracea(spinach) leaves to different light intensities for certain periods of time and measuring the rate of photosynthesis.

• Frequency of Light

Rate of Photosynthesis of Spinacia Oleracea

14.) Examining the relationship between temperature and the rate of cellular respiration in yeast.

Under different environmental temperatures within a certain time period, we measure the amount of carbon dioxide and water released by samples of yeast as a measure of their rate of cellular respiration..

Rate of Respiration (By measuring the amount of carbon dioxide and water released)

15.) To what extent does the frequency and wavelength of sound affect the growth of Triticum Aestivum

Observing the germination rate and rate of growth of Triticum Aestivum under sound treatment with different frequencies and wavelengths of sound.

• Frequency of sound
• Wavelength of sound
• Germination rate of Triticum Aestivum
• Growth rate of Triticum Aestivum

16.) Investigating the effect of salt concentration on the germination rate of Raphanus Sativus.

Analysing and measuring the germination rate of Raphanus Sativus seeds(radish seeds) with provision of various concentrations of salt dissolved in water.

Concentrations of salt in water

Rate of germination of Raphanus Sativus

17.) To what extent does light wavelength and light intensity affect the rate of curdling of cow milk.

Placing various samples of milk underneath different light intensities(low, medium, high) and wavelengths(normal, no light, red, blue, etc.) for a duration of 2 hours and observing the rate of curdling by measuring the change concentration of lactic acid. The milk is curdled by first heating the milk until it comes to a boil and then placing a fixed amount of curd into the samples.

• Light wavelength

Change in concentration of Lactic acid in cow milk

18.) Examining the relationship between the concentration of carbon dioxide and the rate of photosynthesis in Elodea.

Measuring the effect of various concentrations of carbon dioxide on the photosynthesis of samples of Elodea for a certain duration of time.

• Carbon dioxide concentration

Rate of photosynthesis(Amount of oxygen and glucose produced)

19.) Investigating the effect of different pollutants on the oxygen content of various aquatic environment water

Placing various types of pollutants within samples of aquatic environmental water and measuring the change in quantity of dissolved oxygen within the sample..

Various types of pollutants and different aquatic environmental water samples

Change in quantity of dissolved oxygen

20.) How does the concentration of sucrose affect the rate of osmosis in potato cells?

Cut identical pieces of potato and place them in solutions of different concentrations of sucrose. Measure the change in mass of the potato pieces over time.

Concentration of sucrose solution

Change in mass of potato pieces

21.) What is the effect of caffeine on the heart rate of daphnia?

Observe the heart rate of daphnia under the influence of caffeine at different concentrations..

Concentration of caffeine

Heart rate of daphnia

22.) What is the effect of different types of music on the growth rate of pea plants?

Play different genres of music to pea plants and measure the rate of growth.

Genre of music

Rate of growth of pea plants

23.) How does the concentration of salt affect the activity of the amylase enzyme in saliva?

Add amylase enzyme to saliva at different concentrations of salt and measure the rate of starch breakdown.

Concentration of salt in saliva

Rate of starch breakdown

24.) How does the temperature affect the rate of respiration in yeast cells?

Measure the rate of carbon dioxide production by yeast cells at different temperatures.

Rate of carbon dioxide production

25.) Investigating the effect of temperature and carbon dioxide on the rate of enzyme activity and fermentation in Saccharomyces cerevisiae

Exposing samples of Saccharomyces cerevisiae (yeast) to different temperatures and carbon dioxide concentrations and measuring the rate of enzyme activity and fermentation.

• Carbon Dioxide
• Rate of Enzyme Activity of Saccharomyces cerevisiae
• Rate of Fermentation

26.) Investigating the effect of different concentrations of salt on the germination and growth rate of Phaseolus vulgaris

Germinating samples of Phaseolus vulgaris (common bean) in solutions of different concentrations of salt and magnesium and measuring the germination and growth rate.

• Concentration of Salt
• Concentration of Magnesium
• Germination Rate of Phaseolus vulgaris
• Growth Rate of Phaseolus vulgaris

27.) Investigating the effect of pH and light intensity on the activity of catalase and its rate of denaturation extracted from Prunus avium

Extracting and exposing samples of Prunus avium(cherries) to solutions of different pH values and light intensities and measuring the activity of catalase and its rate of denaturation.

• pH of solution

Light intensity

• Activity of Catalase from Prunus avium
• Rate of denaturation

28.) Investigating the effect of temperature and carbon dioxide concentration on the rate of photosynthesis in Elodea canadensis

Exposing samples of Elodea canadensis (Canadian waterweed) to different temperatures and measuring the rate of photosynthesis using a dissolved oxygen probe.

• Temperature of the water in which Elodea canadensis is placed.

Rate of photosynthesis in Elodea canadensis measured by the amount of oxygen produced.

29.) Investigating the effect of different environmental conditions on the ripening of Citrus × sinensis, Citrus × aurantiifolia and Citrus × paradisi

Create a study that monitors the levels of ethylene or CO2 in fruits over a period of time, while subjecting different fruits to varying independent variables.

• Concentration of Ethylene
• Concentration of CO 2

30.) Investigating the effect of nitrate and magnesium concentration in soil on the germination and folate content of Solanum lycopersicum.

Growing samples of Solanum lycopersicum (tomato) in different types of soil and measuring the growth and folate content of samples.

• Nitrate concentration of soil

Magnesium concentration of soil

• Growth of Solanum lycopersicum.
• Folate content of Solanum lycopersicum

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IB Biology HL IA Ideas

The IB Biology HL Internal Assessment (IA) is a 20% project that requires students to complete an independent research project on a chosen theme. Here are some carefully curated IB Biology HL IA topic ideas to help students get started. These ideas have been tried and tested and are popular with examiners. The list includes the basic reasons for investigating each topic, possible independent and dependent variables, and the experimental setup. It’s important to consider if the topics can be applied to one’s own life, as this shows personal engagement.

1.) How do temperature and light intensity that affects photosynthesis balance out each other when it comes to the time taken for photosynthesis to occur?

Expose selected plants with different levels of temperature and light intensity to find the optimum combination for maximum growth rate. Conduct at least 5 trials, excluding control. 

Temperature and light intensity

Time taken for photosynthesis

2.) To what extent does scarification have an effect on germination percentage and shoot growth?

Select a seed that requires scarification and treat it with different methods of scarification like heat, acid and freeze-thaw. Conduct at least 5 trials, excluding control. Compare results to conclude which scarification is most effective. 

Types of scarification

Germination percentage and shoot growth

3.) How do cumin and turmeric powder, in comparison to indigestion tablets, affect the rate of neutralization of hydrochloric acid, measured by the difference of change in pH levels in 5 minutes?

Measure every 5 minutes, the amount of time it takes for the pH of hydrochloric acid to reach a neutral state (pH of 7) when adding cumin and turmeric powder to one sample and indigestion tablets to another sample. Conduct at least 5 trials, excluding control. 

Cumin and turmeric powder

Rate of neutralization of hydrochloric acid

4.) How do different concentrations of Gibberellic acid affect the germination of a Dolly Parton rose?

Soak the Dolly Parton rose seeds in Gibberellic acid of varying concentrations for a specific time period. Place them in Petri dishes and count the number of seeds that germinate. Conduct at least 5 trials, excluding control. 

Different concentrations of Gibberellic acid

Germination of a Dolly Parton rose

5.) What is the effect of different concentrations of green tea extract on the rate of fermentation of yeast?

Add yeast to various Petri dishes containing water with different concentrations of green tea extract. Over time, calculate the pH to determine the level of carbon dioxide produced by the yeast. 

Different concentrations of green tea extract

Change in carbon dioxide concentration produced by yeast

6.) What is the effect of changing the light intensity on the speed of wood louse Armadillidium Vulgare?

Use atleast 5 different light intensities in an enclosed glass container with the wood louse Armadillidium Vulgare and capture the movement of the creature to asses speed.

7.) Comparing the vitamin C or ascorbic acid concentration in store-bought fruit juices and fresh fruits using a titrimetric method?

Fruit samples must be blended with metaphosphoric acid. The homogenous mixture must be measured around and diluted into a volumetric flask with metaphosphoric acid (HPO3). The diluted sample must then be filtered to remove away suspension using a vacuum pump before 10 ml aliquote of the filtrate is pipetted into a small Erlenmeyer flask. The filtrate must be immediately titrated with a dye solution to a faint pink endpoint.

Type of packed and fresh juices

Amount of iodine, types of fruits

8.) An Investigation on the Effect of Varying Concentrations of Amino Acid Glycine on the Seed Germination of Phaseolus vulgaris Seeds?

Take the required number of petri dishes, and add varying concentrations of amino acid glycine to Phaseolus vulgaris Seeds. Asses the rate of germination over a fixed period of time and compare results to optimum concentration.

Varying concentrations of Glycine

Seed germination

9.) Effect of different caffeine concentrations on the blinking rate of the human eye?

Providing different people categorized on age, weight and height, different concentrations of caffeine and recording their blinking rate for a duration of 5 minutes with a reliable camera

Caffeine Concentration

Blinking rate of the human eye

10.) Determination of the ideal pH and temperature for accelerated germination of tomatoes?

Placing different groups of tomato seeds in various combinations of pH and temperature conditions and determining the ideal pH and temperature conditions based upon number of seeds germinated and time consumed to do so.

Germination of Tomato seeds

11.) Investigation of the effects of magnesium on the rate of photosynthesis in Brassica Rapa.

Measuring the rate of photosynthesis of various samples of Brassica Rapa which have been planted utilising the same type of soil or fertiliser but with various concentrations of magnesium.

Rate of photosynthesis of Brassicar Rapa

12.) Investigation of pH and salt concentration on the heart rate of daphnia, a type of water flea.

Under different environmental conditions of pH and salt concentration, measure the heart rate of daphnia under a microscope and count the number of heart beats within a certain time period.

pH and Salt concentration of water

Heart rate of water flea

13.) Analysis of the relationships between various abiotic factors such as and the diversity of plant species in a specific ecosystem.

Research upon different types of ecosystems that seem to be similar but have different abiotic factors and observe the different species within the ecosystem and understand the possible reasons as to the amount of biodiversity in the ecosystem.

Abiotic factors

Biodiversity of ecosystem

14.) Examination of the effect of different types of oil on the cellular structure of plant cells of Solanum Tuberosum

Soaking samples of Solanum Tuberosum within various types of oils for a certain duration of time and analysing the cellular structure of plant cells, primarily the shape of their cell wall.

Type of Oil

Cell wall structure and other cellular components of Solanum Tuberosum

15.) To what extent does different types of cooking techniques have on the concentration of vitamin A in Daucus Carota

Measure the vitamin A concentration of Daucus Carota samples before they undergo cooking in various ways such as boiling, pan-frying, grilling and more and then measuring the vitamin A concentration after the cooking process and comparing the vitamin A concentration.

Method of Cooking

Vitamin A concentration

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16.) investigating the ideal ratio of potassium:magnesium in fertilisers on the growth of seedlings of zingiber officinale..

Placing seedlings of Zingiber officinale that are approximately the same age and measuring the rate of growth with shoot and root length over a fixed period of time within samples of soil with different potassium:magnesium ratios

Ratio of potassium:magnesium in fertiliser

• Shoot length of Zingiber Officinale
• Root length of Zingiber Officinale

17.) To what extent does temperature and light intensity affect the concentration of phenolic acid within samples of Rubus Idaeus

Heat samples of Rubus Idaeus concentrate and measure the concentration of phenolic acids before and after the process.

Concentration of phenolic acid of Rubus Idaeus sample

18.) Examination of the effects of different physical and chemical treatments on the germination and growth of Carica papaya seeds.

Provide various types of treatments to samples of Carica papaya seeds and measure the germination and growth rate of these seeds.

Types of treatment(physic

• Germination of Carica papaya
• Growth rate of Carica papaya

19.) What is the effect of light intensity on the rate of photosynthesis in spinach leaves?

Place spinach leaves in different light intensities and measure the rate of oxygen production.

Rate of oxygen production

20.) How does the presence of salt affect the germination of bean seeds?

Plant bean seeds in soil with varying concentrations of salt and measure the rate of germination.

Concentration of salt in soil

Rate of germination

21.) What is the effect of pH on the activity of lactase enzyme in milk?

Add lactase enzyme to milk at different pH levels and measure the rate of lactose breakdown.

pH level of milk

Rate of lactose breakdown

22.) How does the presence of different types of antibiotics affect the growth of E.coli bacteria?

Culture E.coli bacteria in the presence of different types of antibiotics and measure the rate of growth.

Type of antibiotic

Rate of growth of E.coli bacteria

23.) What is the effect of light wavelength on the rate of photosynthesis in elodea plants?

Illuminate elodea plants with different wavelengths of light and measure the rate of oxygen production.

Wavelength of light

24.) How does the salinity of water affect the survival of brine shrimp?

Place brine shrimp in water of different salinity levels and measure the survival rate.

Salinity of water

Survival rate of brine shrimp

25.) Investigation of the effect of different light wavelengths and intensities on the growth and starch content of Arabidopsis thaliana.

Growing samples of Arabidopsis thaliana (thale cress) under different wavelengths of light and evaluating their growth rates and starch content.

• Light Wavelength
• Growth rate of Arabidopsis thaliana
• Starch Content of Arabidopsis thaliana

26.) Investigation of the effect of different hormones and light wavelength on the development of embryos of Xenopus laevis.

Treating fertilized eggs of Xenopus laevis (African clawed frog) with different hormones and light wavelengths and measuring the development of the embryos.

• Type of Hormone
• Development of Xenopus laevis embryos

27.) Investigation of the effect of exercise on the concentration of lactate and potassium in the blood of humans

Having human participants engage in different levels and intensities of exercise and measuring the concentration of lactate and potassium in their blood.

• Level and Intensity of Exercise
• Concentration of Lactate in the Blood of Humans

28.) Investigation of the effect of different antibiotics in different pH concentrations on the growth of Bifidobacterium

Growing samples of Bifidobacterium in the presence of different antibiotics and pH environments and measuring their growth.

• Type of Antibiotic
• Growth of Bifidobacterium

29.) Investigation of the effect of different concentrations of carbon dioxide on the rate of photosynthesis and respiration in Chlorella vulgaris

Exposing samples of Chlorella vulgaris (green algae) to different concentrations of carbon dioxide and measuring the rate of photosynthesis and respiration.

• Concentration of Carbon Dioxide
• Rate of Photosynthesis of Chlorella vulgaris
• Rate of Respiration of Chlorella vulgaris

30.) Investigation of the effect of different environmental conditions on the behavior and lifespan of Drosophila melanogaster

Observing the behavior and lifespan of Drosophila melanogaster under different environmental conditions, such as temperature, humidity, and light exposure.

• Light Exposure and more
• Behavior of Drosophila melanogaster
• Lifespan of Drosophila melanogaster

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IB Biology EE examples

Filter exemplars, how do different concentrations of punica granatum extracts: peel, flower and leaves (10, 20, 30, 40 and 50 mg/ml) affect the rate of reaction of α-amylase and compare with metformin (anti-diabetic drug) as measured by a spectrophotometer at 587nm, to what extent do extracts of allium sativum (garlic) and zingiber officinale (ginger) reduce antimicrobial activity and how effective it is compared to antibiotics, want to get full marks for your ee allow us to review it for you 🎯, to what extent does performing the dance styles, cha cha, viennese waltz, and modern contemporary affect human fitness levels as measured by oxygen consumption (vo2) and maximum heart rate (bpm), how effective is the cone repair technique when treating ebstein’s anomaly in comparison to other treatments, how does juice from garlic allium sativum cloves prepared in different ways (fresh raw, crushed one day prior, cooked, kept in oil, fermented in brine and fermented (black garlic)) affect the growth of a non-pathogenic strain of escherichia coli, fast track your coursework with mark schemes moderated by ib examiners. upgrade now 🚀, to what extent does the presence of acetaminophen (tylenol), polymixin b (polysporin), and diphenhydramine hydrochloride (benadryl) in the growth medium of cotoneaster acutifolius affect the average change in leaf length over a period of 15 days in five different concentrations, to what extent do different concentrations of magnesium nitrate (10, 20, 30, 40, 50 mm) affect the concentration of chlorophyll a and b in ocimum basilicum at 645 nm and 662 nm wavelength using spectrophotometer, what is the effect of salinity stress (0, 50, 100, 150, 200 mm nacl) measured through microscopic (stomatal aperture) and morphological (leaf area, leaf dry mass, and root length) characteristics on pre-treated radish (raphanus sativus) seeds with magnetopriming (48 hours), how is the number of errors made by participants when attempting to distinguish between the temperature of two different water baths influenced by the hours slept within a 24-hour period, to what extent do different species of chili pepper consumption biologically affect the rate of lipid digestion in terms of ph change within 30 minutes, to what extent do phytochemicals such as resveratrol, glyceollin and epigallocatechin-3-gallate (egcg) possess comparable antibacterial effects against staphylococcus aureus bacteria to a non-prescription otitis externa (oe) treatments such as ciprofloxacin using bacillus subtilis as a prokaryotic model organism, to what extent is blood pressure related to the development of alzheimer’s disease in people in age above 50, to what extent do bioinformatic tools such as cb dock 2 and chimera help in the analysis of phytochemicals (calotropone, quercetin, thymoquinone) compared to allopathic drugs (gemcitabine, olaparib, fluorouracil) against target receptors of pancreatic cancer (human glutamate oxaloacetate transaminase 1 (got1), threonine-protein kinase bub1, and peroxisome proliferator-activated receptor gamma), to what extent does inhaling e-cigarettes affect the lungs’ vital capacity of high school students in jakarta, estudio sobre el efecto de la crema dental utilizada para el cepillado de los dientes como inhibidor en la actividad enzimática de la alfa amilasa salival, how can the frameshift mutation caused by a deletion that affects the human body's melanocortin receptor gene (mcr) and leptin receptor gene (lepr) induce monogenetic obesity, to what extent does high intensity interval training (hiit) effect the maximum oxygen uptake (vo2max) in sedentary populations, investigating the effects of oil spillages on plants, to what extent does varying the duration (0 mins, 5 mins, 10 mins, 15 mins, 20 mins, 25 mins) at which a 25% solution consisting of ethanol-dissolved ayurvedic spices (curcumin and black cumin) is maintained at 60°c affect the antimicrobial activity of these spices against a k12 strain of escherichia coli, what effect do differing concentrations of the growth hormone gibberellic acid, have on the growth and mortality rates of pulses, common beans (phaseolus vulgaris l.) and common peas (pisum sativum l. (partim)), how do different concentrations of two cytokinin hormones: kinetin (0.5, 1 and 1.5 mg/l) and 6-benzylaminopurine (1.5, 2 and 2.5 mg / l) affect the growth of lactuca sativa, measured by height, number of leaves and dry mass, separately and combined over 5 weeks, to what extent is frequent consumption of ultra processed food related to prevalence of overweight and obesity among high school and college students, in poland and in thailand, how does the pollution of oestrogens into freshwater systems affect the biological processes of fathead minnows, to what extent does the abundance of hormosira banksii influence biodiversity at different positions on the intertidal rocky shore, how does the duration of exposure time to ultraviolet light affect the growth of saccharomyces cerevisiae, to what extent do various concentrations of piper betle extract (1%, 2%, 3%, 4%, 5%) affect the enzymatic activity of the digestive enzyme amylase, protease and lipase on their substrates (starch, casein and milk) in the the process of digestion and the estimation of vitamin c concentration in piper betle, ¿cómo los cambios en la luminosidad con niveles de 0, 2 500 y 5 000 lux, en focos de 25 y 50 watts respectivamente, afectan a la fijación de dióxido de carbono (co2) en la sansevieria trifasciata zeylanica biología nm, knowing that fingerprints are always different, but the core is identical, to what extent is it possible to see other similarities between the minutiae of close family members, to what extent does irrigation with carbonated water affect the ferric ion (fe3+) nutrient content of brassica oleracea ‘black tuscany’ microgreens, ¿cómo se estudia el angioedema hereditario, su diagnóstico, tratamiento, síntomas y etiología en humanos, to what extent does the efficiency of lactase enzyme found in different types and brands of dietary supplements (vitaplus innolact lactase dietary supplement film-coated tablet, millandjoy lactase enzyme chewable tablets, lactase comfort drops, dr. chen soft capsule, sanct bernhard lactase enzyme capsule) differ if the prescribed dosage used, measured as the amount of glucose produced after being treated with different supplements in a given time period (30sec, 60sec, 90sec, 120sec, 150sec), how do different concentrations of salicylic acid (1mm and 1m) affect growth of radishes (raphanus sativus), under drought, osmotic and cold stress, as well as normal conditions, the impact of ph on chlorella vulgaris, the effect of sucrose concentration on the percentage change in carbon dioxide during ethanol(yeast fermentation), to what extent does animal rennetassist lactic acid bacteria in the fermentation of milk during the production of cheese curds, what is the effect of seawater mixture (0%, 5%, 10%) on the germination of black chickpeas (cicer arietinum), green gram (vigna radiata) and fenugreek (trigonella foenum-graecum) for 5 days and their subsequent growth when watered using tap water for 10 days where growth was measured by plant height (±0.05 cm) and dry mass (±0.001 g), the digestion rate of oatmeal after different pre-soaking treatments and its correlation to glycemic index, how do different nitrogen-phosphorus-potassium (npk) ratios (1:1:1, 2:1:1, 2:2:1 and water) in aqueous fertilisers affect growth (as measured through a mitotic index) of the onion (allium cepa), over a 5- week period, in a hydroponics set up, to what extent does varying concentrations of the hormone progesterone promote the short term growth of egeria densa.

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IA Examples / Topics

A compilation of Math IA, Physics IA, Chemistry IA, Economics IA, English Oral, English HL Essay, SEHS IA, Business Management IA and more 

SEHS IA (HL) 23/24 - Effect of preliminary exercise on anaerobic performance

Visual Arts Process Portfolio (SL) 32/34 - Impact of Australian Bushfire Crisis

Mathematics IA (SL) 17/20 - Sound, pitch and tuning in music

Chemistry HL IA [24/24] - Effect of pH on fluorescence of fluorescein

Biology SL IA [24/24] - Inhibition of bacillus subtilis using acetic acid

Mathematics SL IA [20/20] - Optimal basketball angle and velocity

Mathematics (SL) IA [19/20] - Modelling the temperature of a cup of tea

Film Comparative Study (HL) 31/32 - Queer Cinema

English Literature Essay (HL) 20/20 - Marcovaldo

Visual Arts Comparative Study (SL) 30/30 - Changing Australian Landscapes

SEHS (HL) 24/24 - Active Static Stretching and Hamstring Contractile Force

SEHS IA (HL) 24/24 - Fatigue and Power

Biology (HL) 24/24 - Microbial enzymatic activity

Chemistry (HL) 24/24 - Activation energy of catalysed decomposition of H2O2

SEHS IA (HL) 24/24 - Isometric resistance, aerobic exercise and blood pressure

Physics (HL) 24/24 - Height of the Chain Fountain (Mould effect)

Visual Arts Process Portfolio (SL) 32/34

English Language and Literature Essay (HL) 19/20 - The Great Gatsby

English Language and Literature Essay (HL) 19/20 - Wislawa Szymborska

Physics IA (HL) 22/24 - Time, temperature and conductive heat transfer