Nursing Elites

1. What is the major diet-derived antioxidant found in cell membranes?

• A. B12
• B. beta-carotene
• C. vitamin E
• D. vitamin A

Correct answer: C

Rationale: The correct answer is vitamin E. Vitamin E is the major antioxidant found in cell membranes, where it plays a crucial role in protecting them from oxidative damage. Although B12, beta-carotene, and vitamin A are important nutrients with specific functions in the body, they are not the primary antioxidants found in cell membranes. Vitamin E specifically localizes in cell membranes to neutralize free radicals and prevent lipid peroxidation, making it an essential antioxidant for cellular health.

2. Which of the following foods or beverages would offer the most nutrients per calorie?

• A. chicken
• B. wine
• C. white bread
• D. broccoli

Correct answer: D

Rationale: Broccoli is indeed the correct answer. Broccoli is considered nutrient-dense, meaning it provides a significant amount of essential nutrients like vitamins, minerals, and fiber while being relatively low in calories. On the other hand, choices A, B, and C are not as nutrient-dense as broccoli. Chicken can be nutritious but may vary in nutrient content depending on the cut and preparation method. Wine, although containing antioxidants like resveratrol, is not a significant source of essential nutrients. White bread is often low in nutrients and fiber compared to whole grain options, making it less nutrient-dense than broccoli.

3. The following are all classes of nutrients except:

• A. protein
• B. fat
• C. carbs
• D. phytochemicals

Correct answer: D

Rationale: Phytochemicals are not considered a class of nutrients. While proteins, fats, and carbohydrates are essential macronutrients providing energy and structural support, phytochemicals are non-nutrient compounds found in plants that offer various health benefits but are not essential for sustaining life like the other three choices. Therefore, the correct answer is D.

4. Which dietary modification is most suitable for a client with type 2 diabetes who wants to improve glycemic control?

• A. Increase intake of saturated fats
• B. Decrease intake of refined carbohydrates
• C. Completely avoid all fruits
• D. Increase intake of sugary snacks

Correct answer: B

Rationale: Decreasing the intake of refined carbohydrates is the most effective dietary modification for a client with type 2 diabetes who aims to improve their glycemic control. Refined carbohydrates can cause sudden spikes in blood sugar levels, making diabetes management more difficult. Increasing the intake of saturated fats (Choice A) is not advisable as it can negatively impact heart health. Completely avoiding all fruits (Choice C) is unnecessary because most fruits have a low glycemic index and provide essential nutrients. Increasing the intake of sugary snacks (Choice D) will deteriorate glycemic control due to their high sugar content.

5. What is the movement of water from an area of lower solute concentration to one of higher solute concentration called?

• A. Hypodipsia
• B. Hypernatremia
• C. Hypokalemia
• D. Osmosis

Correct answer: D

Rationale: The correct answer is D, Osmosis. Osmosis is the process where water moves from an area of low solute concentration to an area of high solute concentration. This movement equalizes the solute concentration in intracellular and extracellular fluids. Choices A, B, and C are incorrect because they do not describe the movement of water based on solute concentration levels.

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