HESI LPN
Nutrition Final Exam
1. 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.
2. By chemical analysis, what nutrient is present in the highest amounts in most foods?
- A. fats
- B. water
- C. proteins
- D. carbohydrates
Correct answer: B
Rationale: The correct answer is B. Water is the most abundant nutrient in many foods. Water content varies across different foods, but in general, it is present in the highest amounts. Fats (Choice A) are essential but are not found in higher amounts compared to water. Proteins (Choice C) and carbohydrates (Choice D) are also important nutrients, but they are typically found in lower quantities in most foods compared to water.
3. What is one primary factor that influences nutrient needs in individuals?
- A. Age
- B. Gender
- C. Genetics
- D. Physical activity level
Correct answer: A
Rationale: Correct. Age is one of the primary factors influencing nutrient needs. Different life stages, such as infancy, childhood, adulthood, and old age, require varying amounts of nutrients. Gender (choice B) can influence nutrient needs to some extent, but age plays a more significant role. Genetics (choice C) may affect how individuals metabolize certain nutrients but is not a primary factor in determining overall nutrient needs. Physical activity level (choice D) can impact energy requirements but is not as fundamental as age in influencing overall nutrient needs.
4. Gram for gram, which class of nutrient provides the most energy?
- A. fats
- B. alcohols
- C. proteins
- D. carbohydrates
Correct answer: A
Rationale: The correct answer is fats. Fats provide 9 kilocalories per gram, which is more energy-dense compared to proteins and carbohydrates. While proteins and carbohydrates provide 4 kilocalories per gram, fats provide more than twice the energy, making them the most energy-providing nutrient. Alcohols are not considered essential nutrients and do not provide energy for the body, unlike fats, proteins, and carbohydrates. Therefore, fats are the correct answer for the most energy-providing nutrient.
5. What is a key dietary consideration for a child with phenylketonuria (PKU)?
- A. High-fiber diet
- B. Low-phenylalanine diet
- C. Increased dairy intake
- D. High-sodium diet
Correct answer: B
Rationale: A low-phenylalanine diet is crucial for managing PKU to prevent neurological damage and maintain normal development. Phenylalanine is an amino acid found in protein-containing foods, and individuals with PKU have difficulty metabolizing it. Consuming foods low in phenylalanine helps prevent the buildup of toxic byproducts in the body. Choices A, C, and D are incorrect. A high-fiber diet, increased dairy intake, and high-sodium diet are not specific dietary considerations for PKU management. In fact, dairy products are a source of protein and phenylalanine, which should be limited in PKU.
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