Nokea
Which of the following are considered micronutrients?
- A. Fats.
- B. Proteins.
- C. Vitamins.
- D. Carbohydrates.
Correct Answer: C
Rationale: Micronutrients are essential nutrients needed by the body in small quantities to support various bodily functions. Vitamins fall under this category as they play crucial roles in metabolism, immune function, and overall health. While fats, proteins, and carbohydrates are essential macronutrients required in larger amounts for energy and growth, they are not classified as micronutrients. Therefore, the correct answer is C.
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The function of Dietary Reference Intakes (DRIs) is to designate nutrient recommendations for:
- A. different ethnic groups.
- B. all individuals.
- C. most people.
- D. most healthy people.
Correct Answer: D
Rationale: The correct answer is D. Dietary Reference Intakes (DRIs) are established to provide nutrient recommendations for most healthy people. They are not specific to different ethnic groups (choice A), all individuals (choice B), or most people (choice C). DRIs aim to prevent nutrient deficiencies and chronic diseases in healthy individuals by setting intake levels for various nutrients.
Which observation provides evidence that a person has good nutritional status?
- A. Small muscle mass.
- B. Normal weight-to-height ratio.
- C. Smooth tongue.
- D. Fragile skin.
Correct Answer: B
Rationale: A normal weight-to-height ratio is a reliable indicator of good nutritional status as it suggests that the person is well-nourished and not underweight or overweight. Small muscle mass (choice A) can indicate malnutrition, a smooth tongue (choice C) can be a sign of vitamin deficiencies, and fragile skin (choice D) can be a sign of poor nutrition or other health issues, but they are not as direct indicators of good nutritional status as a normal weight-to-height ratio.
Which age group is particularly vulnerable to malnutrition?
- A. Infants
- B. Teenagers
- C. Young adults
- D. Middle-aged adults
Correct Answer: A
Rationale: Infants are particularly vulnerable to malnutrition due to their high growth rate and specific nutrient requirements. During the first year of life, infants experience rapid growth and development, requiring essential nutrients for proper physical and cognitive development. Teenagers, young adults, and middle-aged adults have more stable nutritional needs compared to infants, making them less vulnerable to malnutrition. Therefore, infants are the most susceptible age group when it comes to malnutrition.
The nutrients involved in metabolic regulation and control include minerals, vitamins, and:
- A. amino acids.
- B. carbohydrates.
- C. fats.
- D. water.
Correct Answer: D
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
The mineral that helps control enzyme actions in cell mitochondria that produce and store high-energy compounds is:
- A. iron.
- B. cobalt.
- C. hemoglobin.
- D. vitamin B12.
Correct Answer: A
Rationale: The correct answer is iron. Iron is essential for enzyme function and energy production within the mitochondria. While cobalt is important for certain enzymes, it is not the primary mineral involved in this specific function. Hemoglobin is a protein in red blood cells that carries oxygen, not a mineral involved in enzyme actions. Vitamin B12 is crucial for nerve function and DNA synthesis but is not directly related to controlling enzyme actions in mitochondria.