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. Any disease that produces ____ malabsorption can bring about deficiencies of vitamins A, D, E, and K.

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

Correct answer: C

Rationale: Vitamins A, D, E, and K are fat-soluble, meaning they require fat for absorption. Diseases that cause fat malabsorption can lead to deficiencies in these vitamins.

3. Which enzyme is most essential for the digestion of triglycerides found in butterfat?

• A. Gastric lipase
• B. Pepsin
• C. Mucus
• D. Intrinsic factor

Correct answer: A

Rationale: The correct answer is A: Gastric lipase. Gastric lipase is crucial for the digestion of short- and medium-chain triglycerides, such as those found in butterfat. Pepsin is involved in protein digestion, not lipid digestion. Mucus acts as a protective barrier in the stomach and does not play a direct role in lipid digestion. Intrinsic factor is involved in the absorption of vitamin B12 and is not related to the digestion of triglycerides.

4. How long can Vitamin A be stored in the liver for at least?

• A. 1 month.
• B. 6 months.
• C. 1 year.
• D. 18 months.

Correct answer: C

Rationale: Vitamin A can be stored in the liver to meet basic needs for at least 1 year. This storage capacity allows the body to have a reserve of Vitamin A to sustain its needs over an extended period. Choices A, B, and D are incorrect because they underestimate the storage capacity of Vitamin A in the liver, which can last longer than these durations.

5. A client is being taught how to follow a low-purine diet for gout management. Which statement indicates the client understands the teaching?

• A. "I will need to limit the number of fruit servings each day."?
• B. "I should avoid eating liver and other organ meats."?
• C. "I can drink only white wine."?
• D. "I should choose red meat instead of poultry."?

Correct answer: B

Rationale: The correct answer is B. Organ meats like liver are high in purines, which can exacerbate gout symptoms. Choosing to avoid such foods is essential in following a low-purine diet. Option A is incorrect because fruits are generally low in purines and are not usually restricted in a low-purine diet. Option C is incorrect as white wine, just like other types of alcohol, should be consumed in moderation or avoided due to its purine content. Option D is incorrect because red meat, including beef and lamb, is high in purines and should be limited in a low-purine diet.

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