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Nutrition Final Exam Quizlet
1. In what units are energy measurements expressed by most scientists and nutritionists outside the United States?
- A. newtons
- B. liters
- C. kilojoules
- D. kilocalories
Correct answer: C
Rationale: Kilojoules are the standard units of energy used by most scientists and nutritionists worldwide. Newtons are units of force, liters are units of volume, and kilocalories are more commonly used in the United States but not as widely adopted internationally for energy measurements. Therefore, the correct answer is 'kilojoules.'
2. Which statement best describes the composition of most foods?
- A. Most foods contain a mixture of the three energy nutrients, with one or two predominating.
- B. Foods do not typically contain equal amounts of the three energy nutrients.
- C. Most foods contain mixtures of the three energy nutrients, although only one or two may predominate.
- D. Most foods contain all three energy nutrients in varying amounts.
Correct answer: C
Rationale: The correct answer is C. Most foods contain a mixture of the three energy nutrients (carbohydrates, proteins, fats), with one or two predominating. Choice A is correct because most foods do contain a combination of energy nutrients, with one or two types usually being predominant. Choice B is incorrect as foods typically do not contain equal amounts of carbohydrates, proteins, and fats. Choice D is incorrect because most foods contain all three energy nutrients, not just one or two types.
3. Which of the following best describes the purpose of dietary guidelines?
- A. To ensure food safety and sanitation.
- B. To promote overall health and reduce the risk of chronic diseases.
- C. To prevent foodborne illnesses.
- D. To provide recommendations for physical activity.
Correct answer: B
Rationale: The correct answer is B: 'To promote overall health and reduce the risk of chronic diseases.' Dietary guidelines aim to improve public health by providing recommendations on dietary patterns and nutrient intake. While ensuring food safety and sanitation (choice A) is important, it is not the primary purpose of dietary guidelines. Preventing foodborne illnesses (choice C) is more related to food safety practices rather than dietary guidelines. Recommendations for physical activity (choice D) are important for overall health but are separate from dietary guidelines, which primarily focus on nutrition.
4. What does a positive correlation between two variables indicate?
- A. One variable causes the other.
- B. Both variables move in the same direction.
- C. Both variables move in opposite directions.
- D. There is no relationship between the variables.
Correct answer: B
Rationale: A positive correlation between two variables indicates that they move in the same direction. This means that as one variable increases (or decreases), the other variable also increases (or decreases). Choice A is incorrect because correlation does not imply causation; it only shows a relationship between variables. Choice C is incorrect as it describes a negative correlation where variables move in opposite directions. Choice D is incorrect as a positive correlation implies a relationship between the variables.
5. What is a primary concern for a child with a new diagnosis of diabetes mellitus?
- A. Increased growth rate
- B. Risk of hyperglycemia
- C. Risk of dehydration
- D. Improved appetite
Correct answer: B
Rationale: The correct answer is B: Risk of hyperglycemia. When a child is newly diagnosed with diabetes mellitus, one of the primary concerns is the risk of hyperglycemia, which refers to high blood glucose levels. Hyperglycemia can lead to various complications if not managed properly, making it crucial to stabilize blood glucose levels. Choices A, C, and D are incorrect because increased growth rate, risk of dehydration, and improved appetite are not primary concerns specifically associated with a new diagnosis of diabetes mellitus.
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