what is the smallest amount of a nutrient that when consumed over a prolonged period maintains a specific function
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Nutrition Final Exam

1. What is the smallest amount of a nutrient that, when consumed over a prolonged period, maintains a specific function?

Correct answer: B

Rationale: The correct answer is 'B: nutrient requirement.' The nutrient requirement refers to the smallest amount of a nutrient that, when consumed over a prolonged period, maintains a specific function in the body. This amount ensures the body's optimal functioning and health. Choice A, 'nutrient allowance,' is incorrect as it does not specifically refer to the minimum amount needed for bodily functions but rather suggests a broader term. Choice C, 'nutrient tolerable limit,' is incorrect as it pertains to the maximum amount of a nutrient that can be consumed without adverse effects. Choice D, 'nutrient adequate intake,' is incorrect as it refers to the recommended average daily intake level of a nutrient to meet the requirements of most healthy individuals.

2. What is an important aspect of managing a child with ADHD?

Correct answer: B

Rationale: Consistent behavior management strategies are crucial when managing a child with ADHD. By implementing consistent strategies, such as clear rules, positive reinforcement, and structure, it helps the child improve focus, manage impulsivity, and regulate their behavior. Choice A, 'Increasing academic workload,' is incorrect as overwhelming a child with ADHD with more academic tasks can exacerbate their symptoms. Choice C, 'Restricting all physical activity,' is also incorrect as physical activity is beneficial for children with ADHD to release excess energy and improve focus. Choice D, 'Encouraging solitary activities,' is not ideal as social interaction and engagement with others are important for a child's development and well-being.

3. What dietary modification is important for a child with celiac disease?

Correct answer: B

Rationale: The correct answer is B: Avoid gluten-containing foods. For a child with celiac disease, it is crucial to eliminate gluten from their diet to manage the condition effectively. Gluten triggers an immune response in individuals with celiac disease, leading to symptoms and damage to the small intestine. Choices A, C, and D are incorrect because increasing dairy intake, decreasing protein intake, or increasing fiber intake are not specific dietary modifications for managing celiac disease.

4. What is the term for the study of how diet affects gene expression?

Correct answer: B

Rationale: Nutrigenomics is the study of how diet affects gene expression, influencing health outcomes and disease risk. Epigenetics (choice A) involves changes in gene expression or cellular phenotype caused by mechanisms other than changes in the underlying DNA sequence. Genomics (choice C) is the study of an organism's entire genome. Genetics (choice D) is the study of heredity and the variation of inherited characteristics.

5. How much energy is required to raise the temperature of one kilogram of water by 1°C?

Correct answer: C

Rationale: The correct answer is 1 kilocalorie. This is the amount of energy required to raise the temperature of 1 kilogram of water by 1°C. Choice A (10 calories) and Choice D (10 kilocalories) are incorrect as they do not represent the correct unit of measurement for this specific scenario. Choice B (100 calories) is also incorrect as it overestimates the amount of energy required. The specific heat capacity of water is approximately 1 calorie/gram °C, which means that 1 kilogram (1000 grams) of water requires 1 kilocalorie (1000 calories) to raise its temperature by 1°C.

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