Nursing Elites

1. Each statement is true of proteins, except one. Which is the exception?

• A. Proteins are composed of building blocks called amino acids
• B. The classification of the 20 common amino acids is based on the properties of their side chains
• C. The general structure of an amino acid varies considerably
• D. Amino acids polymerize to form long chains called polypeptides

Correct answer: B

Rationale: The correct answer is B. The classification of the 20 common amino acids is not based on the properties of their side chains, but rather on the structure of their amino and carboxyl groups. These groups are consistent among all amino acids, while the side chains, also known as R groups, are what vary and give each amino acid its unique properties. Choice A is correct because proteins are indeed composed of amino acids. Choice C is incorrect because while the side chains of amino acids can vary, the general structure of an amino acid - a central carbon atom bonded to an amino group, a carboxyl group, a hydrogen atom, and a side chain - is consistent. Choice D is correct because amino acids do polymerize to form long chains called polypeptides, which can then fold into complex shapes to form proteins.

2. In managing Type 2 diabetes, what is the most important dietary change?

• A. Increase carbohydrate intake
• B. Increase fiber intake
• C. Increase protein intake
• D. Reduce fat intake

Correct answer: B

Rationale: Increasing fiber intake can help regulate blood sugar levels in patients with Type 2 diabetes.

3. In an extreme situation and when no other resident or intern is available, should a nurse receive telephone orders, the order has to be correctly written and signed by the physician within:

• A. 24 hours
• B. 36 hours
• C. 48 hours
• D. 12 hours

Correct answer: B

Rationale: In an extreme situation where no other resident or intern is available, if a nurse receives telephone orders, the order has to be correctly written and signed by the physician within 36 hours. This time frame ensures timely documentation and validation of the orders. Choice A (24 hours) is too short a period for busy physicians to fulfill the task. Choice C (48 hours) is too long and delays the incorporation of physician orders into the patient's care plan. Choice D (12 hours) may not provide enough time for the physician to review and sign the order, especially in situations where immediate attention is not required.

4. 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.

5. Among people who are ill, significant weight loss may be masked by?

• A. dehydration
• B. a large tumor
• C. drug therapy
• D. fluid retention

Correct answer: D

Rationale: Fluid retention can mask weight loss in ill individuals as the retained fluid adds to body weight, making it difficult to detect true fat or muscle loss. Dehydration (Choice A) would actually lead to weight loss rather than masking it. While a large tumor (Choice B) could contribute to weight loss, it would not mask the weight loss itself. Drug therapy (Choice C) may cause side effects, including weight changes, but it is unlikely to mask significant weight loss in the same way that fluid retention does.

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