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Nutrition Final Exam Quizlet
1. What role do fats play in the human body?
- A. They provide a concentrated source of energy.
- B. They are the building blocks of enzymes and hormones.
- C. They are essential for brain function and development.
- D. They aid in the digestion of food.
Correct answer: D
Rationale: Fats play various essential roles in the human body, one of which is aiding in the digestion of food. While fats do provide a concentrated source of energy, the primary source is carbohydrates. Proteins are the building blocks of enzymes and hormones, not fats. Essential fatty acids found in fats are vital for brain function and development, but this is not the primary role of fats in the body.
2. What is a key intervention for a child with a new diagnosis of type 1 diabetes?
- A. Insulin administration
- B. Increased dietary fat intake
- C. Restricted fluid intake
- D. Routine physical examinations only
Correct answer: A
Rationale: The correct answer is A: Insulin administration. When a child is diagnosed with type 1 diabetes, insulin administration is a crucial intervention. Insulin helps regulate blood glucose levels by enabling cells to take in glucose from the bloodstream. Without sufficient insulin, blood glucose levels can become dangerously high, leading to various complications. Increased dietary fat intake (choice B) is not a recommended intervention for type 1 diabetes management, as it can contribute to weight gain and other health issues. Restricted fluid intake (choice C) is also not appropriate, as adequate hydration is essential for overall health. Routine physical examinations (choice D) are important but are not the primary intervention needed to manage type 1 diabetes.
3. What is the main purpose of Recommended Dietary Allowances (RDAs)?
- A. To provide guidelines for nutrient intakes that meet the needs of most healthy people.
- B. To specify the minimum amount of nutrients required for survival.
- C. To establish maximum safe levels of nutrient intakes.
- D. To recommend specific nutrient intake levels to prevent chronic diseases.
Correct answer: A
Rationale: The main purpose of Recommended Dietary Allowances (RDAs) is to provide guidelines for nutrient intakes that meet the needs of most healthy people. Choice B is incorrect because RDAs aim beyond just survival requirements. Choice C is incorrect because establishing maximum safe levels is the role of Tolerable Upper Intake Levels (ULs). Choice D is incorrect because preventing chronic diseases is more associated with Dietary Reference Intakes (DRIs) like Adequate Intakes (AIs) and Tolerable Upper Intake Levels (ULs). Therefore, the correct answer is A.
4. What is one benefit of using controls in an experiment?
- A. The size of the groups does not matter.
- B. The subjects are unaware of the experiment's details.
- C. The subjects who are treated are balanced against the placebos.
- D. The subjects are similar in all respects except for the treatment being tested.
Correct answer: D
Rationale: The correct answer is D. Controls in an experiment ensure that the subjects are similar in all respects except for the treatment being tested. This allows for a fair comparison between the treatment group and the control group. Choice A is incorrect because the size of the groups is not the primary benefit of using controls. Choice B is incorrect as blinding, not controls, refers to subjects not knowing about the experiment. Choice C is incorrect as it pertains more to randomization than the use of controls.
5. What is the recommended daily intake of fiber for adults?
- A. 10 grams
- B. 15 grams
- C. 20 grams
- D. 25 grams
Correct answer: D
Rationale: The recommended daily intake of fiber for adults is 25 grams. Fiber plays a crucial role in maintaining digestive health, preventing constipation, and aiding in weight management. Options A (10 grams), B (15 grams), and C (20 grams) are incorrect as they are below the recommended daily intake of fiber for adults, which is 25 grams.
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