HESI LPN
Nutrition Final Exam
1. How much energy is required to raise the temperature of one kilogram of water by 1°C?
- A. 10 calories
- B. 100 calories
- C. 1 kilocalorie
- D. 10 kilocalories
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.
2. Approximately how many grams does a normal half-cup vegetable portion weigh?
- A. 5 grams
- B. 50 grams
- C. 100 grams
- D. 150 grams
Correct answer: C
Rationale: A normal half-cup vegetable portion usually weighs around 100 grams. This weight is a standard measurement for a half-cup serving of vegetables, making choice C the correct answer. Choices A, B, and D are incorrect as they do not align with the typical weight of a half-cup vegetable portion.
3. 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.
4. What is a primary goal of managing diabetes mellitus in children?
- A. Promote weight maintenance
- B. Prevent episodes of hypoglycemia
- C. Ensure normal growth and development
- D. Optimize blood sugar control
Correct answer: C
Rationale: The primary goal of managing diabetes mellitus in children is to ensure normal growth and development. This involves maintaining stable blood glucose levels to prevent complications. Option A is incorrect because promoting weight gain is not a primary goal in managing diabetes; rather, the aim is to maintain a healthy weight. Option B is not the primary goal; although it is important to prevent episodes of hypoglycemia, the main focus is on overall management. Option D is incorrect as optimizing blood sugar control is a means to achieve the primary goal, which is ensuring normal growth and development.
5. In what position does the Pavlik harness hold a child's femurs for developmental hip dysplasia?
- A. Abduction
- B. Adduction
- C. Flexion
- D. Extension
Correct answer: A
Rationale: The Pavlik harness is designed to position a child's femurs in abduction for developmental hip dysplasia. Abduction helps align the hip joint correctly and promotes proper development in cases of hip dysplasia. Adduction (choice B) brings the legs closer to the midline, which is not the desired position in this condition. Flexion (choice C) refers to bending at a joint, while extension (choice D) is the opposite of flexion. However, in the case of developmental hip dysplasia, abduction is crucial for the Pavlik harness to work effectively.
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