Chat with AIExam 1: Nutrition: Food for Health
Researchers are interested in whether caffeine has any effect on short-term memory.A study is designed in which two groups of subjects are given capsules that look identical.Group A receives capsules containing caffeine and Group B receives capsules containing powdered sugar.Group B is being given a:
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VerifiedB
Eating turkey on Thanksgiving is an example of making a food choice based on:
(75) VerifiedA
What are two advantages of using animals instead of humans in nutrition experiments? What are two disadvantages?
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Answered by Examlex AI CopilotAdvantages of Using Animals in Nutrition Experiments:
1. Ethical Considerations: One of the primary advantages of using animals in nutrition experiments is the ability to conduct studies that would be unethical to perform on humans. For example, inducing nutritional deficiencies, overfeeding, or testing the effects of potentially harmful substances can be done on animals to understand the impact on health without subjecting humans to the risks associated with these experiments.
2. Controlled Environment: Animals can be kept in a controlled environment where their diet, activity level, and other variables can be strictly managed. This level of control is often not possible with human subjects, who have their own free will and live in varied environments. The controlled setting with animals allows for more precise and accurate data collection on the effects of specific nutritional interventions.
Disadvantages of Using Animals in Nutrition Experiments:
1. Generalizability to Humans: A significant disadvantage of using animals in nutrition experiments is that the results may not always be directly applicable to humans. Differences in physiology, metabolism, and genetics between animals and humans can lead to different responses to diets or nutritional interventions. This means that findings from animal studies must be interpreted with caution and often require additional validation in human trials before they can be considered reliable for human health recommendations.
2. Ethical Concerns: While using animals can bypass some ethical issues related to human experimentation, it raises other ethical concerns regarding the treatment of animals. The welfare of the animals used in experiments is a significant concern, and there are strict regulations and guidelines to ensure that animals are treated humanely. However, the use of animals for research purposes is still a contentious issue, and some people believe that it is unethical to use animals in this way, regardless of the potential benefits to human health.
Where do most people in the U.S.get their nutrition information?
(95) Mrs.Sandoz' fourth grade class spent several class periods learning about nutrition.They learned about MyPyramid and how eating a healthy diet could benefit them.Mr.Danner's fourth grade class,in the same building,did not have a unit on nutrition.After the nutrition unit was finished in Mrs.Sandoz' class,researchers looked at the selections students made in the cafeteria and how much food was consumed and thrown away by each class to see if the nutrition education had an effect on the students' eating habits.
a)What type of study was this?
b)Which classroom was the control classroom?
c)Which classroom was the experimental group?
d)What other factors affect students' choice of food,besides what they know about health and food?
(91) Americans are replacing more and more home cooked meals with meals from fast food restaurants.
a)What are the nutritional impacts of this trend?
b)How does this trend influence disease risk?
(83) One important principle of a healthy diet is to eat a variety of foods.In this context,"variety" refers to:
(72) Which of the following yields energy but is not considered a nutrient?
(72) Which of the following is LEAST likely to affect food choices?
(97) Which of the following nutrients are NOT organic molecules?
(89) Nutrients are classified according to their chemical properties.What are the six classes of nutrients? Which are macronutrients? Which are micronutrients?
(77) Physiologic processes take place in the body to keep body temperature,heart rate,and blood sugar relatively constant.This stable state is called:
(81) Which of the following is the BEST reason to include a placebo in the experimental design of a human intervention trial?
(80) When evaluating a nutritional study,which is the least important factor?
(79) Describe the steps involved in conducting a valid experiment using the scientific method.
(70) What is the difference between a depletion-repletion study and a balance study? How is each used in the field of nutrition?
(82) Which of the following statements about the typical American diet is true?
(73) People's food choices are affected by many factors other than the nutritional value of the food.Select two of the factors that affect food choices and explain how you would use this factor to help reinforce a dietary change an individual is trying to make for nutritional reasons.
(78) Recently,Trevor received an e-mail forwarded to him by a friend.The e-mail warns all recipients of the dangers of an FDA approved artificial sweetener,which,according to the original author,is responsible for several types of cancer,mental illness,and several other serious ailments.The author uses several anecdotal stories as the basis for her assertions.Curious,Trevor does a search on the Internet for the author but cannot find any information about her.
a)What do you think of unsolicited e-mail as a source of nutrition advice?
b)How likely is it this one FDA approved product causes several different diseases?
c)What else makes you wonder about the validity of the information?
d)How might you use the Internet to get more information about the artificial sweetener in question?
e)How can you tell if nutrition information in a letter,in an article,or on television is accurate?
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