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A Light Lunch Case Study-3
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Tuna for Lunch?
A Case Study Examining Mercury Bioaccumulation and Biomagnification
By Caralyn B. Zehnder
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This case examines mercury bioaccumulation and biomagnification within the context of the human health impacts of ingesting food (specifically, fish) contaminated with mercury. It was inspired by a 2009 USGS report on mercury in fish, sediment, and water from streams across the U.S. The case is intended to help students make the connection between an environmental contaminant (mercury, a neurotoxin) and the food they eat. Human activities have been increasing mercury concentrations globally, and coal-burning power plants are the most common source of mercury pollution, a fact many students are unaware of. The case has been used in an introductory level environmental science class (predominantly non-majors), a non-majors general biology class, and a sophomore level ecology class (majors).
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Date Posted
- Explain why there are fish consumption advisories related to mercury.
- Explain how mercury enters and moves through the environment.
- Read, interpret, and apply scientific data presented in graphs and tables for this case study.
- Define biomagnification and explain how it leads to higher concentrations of toxins in animals that are higher up the food chain.
- Explore how biomagnification occurs in other systems and with other compounds (if students complete optional final activity).
Biomagnification; bioaccumulation; mercury; neurotoxin; fish consumption; tuna; food chain; food web; trophic; coal-burning
Subject Headings
EDUCATIONAL LEVEL
High school, Undergraduate lower division, Undergraduate upper division
TOPICAL AREAS
TYPE/METHODS
Teaching Notes & Answer Key
Teaching notes.
Case teaching notes are protected and access to them is limited to paid subscribed instructors. To become a paid subscriber, purchase a subscription here .
Teaching notes are intended to help teachers select and adopt a case. They typically include a summary of the case, teaching objectives, information about the intended audience, details about how the case may be taught, and a list of references and resources.
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Answer Keys are protected and access to them is limited to paid subscribed instructors. To become a paid subscriber, purchase a subscription here .
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Materials & Media
Supplemental materials.
The case includes a PowerPoint presentation (~2.9MB) that can be used in conjunction with the case, as described in the teaching notes for the case.
- Mercury in Fish Power Point
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IMAGES
VIDEO
COMMENTS
A Light Lunch? A Case In Calorie Counting Elizabeth Carbs - 432.4 Calories Protein - 150.4 Calories Fat - 225 Calories Total = 807.8 Cals Charonda Amanda Ghent Madiha mahmood December 3, 2015 BIO 110 LAB Carbs - 271.2 Calories Protein - 72 Calories Fat - 61.2 Calories Total =
Abstract. This case study was developed to engage students by making connections between core concepts in chemistry and obesity related factors. The case is in the form of a story between two friends and their underestimation of the calories they consumed in a meal and their overestimation of the efforts needed to maintain a healthy body weight ...
for jerk chicken and rum cake!". Pre-Case Study Questions. 1. Provide a very brief explanation of the following terms: (a) carbohydrate, (b) protein, (c) fats, (d) saturated fats, (d) trans fats, and (e) cholesterol. 2. The foods that we eat provide energy for the body.
"A Light Lunch?" by Dewprashad and Vaz.Page 1 A Light Lunch? A Case in Calorie Counting by Brahmadeo Dewprashad, Department of Science. Borough of Manhattan Community College, The City University of New York and Geraldine S. Vaz, Ambulatory Care Department, Jamaica Hospital, Queens, New York Instructions: -Use your textbook or other reputable source to answer the " Pre-Case Study ...
Deja Davis A Light Lunch? A Case in Calorie Counting Brahmadeo Dewprashad Department of Science Borough of Manhattan Community College The City University of New York Geraldine S. Vaz Ambulatory Care Department Jamaica Hospital, Queens, New York Directions: Read the following case study and complete the Pre-Case Study Assignment for homework.Be prepared for a high level of discussion in our ...
A Light Lunch? A Case in Calorie Counting 5 Pre-Case Study Questions Part 1 1. Provide a very brief explanation of the following terms: (a) carbohydrate, (b) protein, (c) fats, (d) saturated fats,(e) trans fats, and (f) cholesterol. Carbohydrate: Carbohydrates are one the main type nutrients. The digestive system converts carbohydrates into glucose and it's used for energy to manage your ...
A Case in Calorie Counting: Before Class | PDF | Calorie | Body Mass Index. calorie_chemistry - Free download as PDF File (.pdf), Text File (.txt) or read online for free.
Alpha-Glucosidase Inhibitors (Acarbose) Prescribed when patient does not normally produce insulin. Block the rate of absorption of carbohydrates so that it is absorbed in your colon, farther away from your stomach. Main problem of T2DM is an increased rate of blood sugar after eating. Acarbose slows the rate at which carbs are absorbed ...
Transcribed image text: Case Study Questions 1. Use the information below to determine the amount of Calories in the food consumed by Elizabeth and Charonda. Did Elizabeth follow Charondas example and consume a similar amount of calories during their "light" lunch? The caloric values of carbohydrates, fars, and proteins are 17, 38, and 17 kJ/g ...
Study with Quizlet and memorize flashcards containing terms like What salads, What apps?, What kind of tacos can you get and more. ... What two entrees stay the same with light lunch and dinner? Mahi and salmon. Lobster tail. 7oz tail,Fries,slaw, Drawn Butter. Filet. 10oz,Fries, Veg, Demi glaze. Skirt & frites. 10oz, Gorgonzola, Fries. About us.
1. Do not eat Shark, Swordfish, King Mackerel, or Tilefish because they contain high levels of mercury. 2. Eat up to 12 ounces (2 average meals) a week of a variety of fish and shellfish that are lower in mercury. • Five of the most commonly eaten fish that are low in mercury are shrimp, canned light tuna, salmon, pollock, and catfish.
The caloric values of carbohydrates, fats, and proteins are 17, 38, and 17 kJ/g, respectively and 1 Calorie (Cal) = 4.184 kJ. Elizabeth's lunch Charonda's lunch. Menu item Pizza with pepperoni Taco salad Grape soda Cheese pizza Garden salad Iced tea.
This case examines mercury bioaccumulation and biomagnification within the context of the human health impacts of ingesting food (specifically, fish) contaminated with mercury. It was inspired by a 2009 USGS report on mercury in fish, sediment, and water from streams across the U.S. The case is intended to help students make the connection ...
Elexus Nochebuena K. Winters Foods and Nutrition 10 November 2019 Unit 2 Case Study: A Light Lunch Pre-Case Study Questions 1. Provide a very brief explanation of the following terms: (a) carbohydrate, (b) protein, (c) fats, (d) saturated fats, (d) trans fats, and (e) cholesterol (E) Cholesterol : A waxy substance that comes from two sources ...
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A Light Lunch? A Case in Calorie Counting 2 The topic of this case study is about the intake of calories and how we burn them. The purpose of this case study was to discover different metabolic rates. It starts off with two friends, one trying on clothes, who can't seem to fit into a pair of pants. After window shopping the two friends, Charonda and Elizabeth, set out to eat lunch.
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