Nursing Elites

1. Which mineral is a principal component of cell membranes?

• A. phosphorus
• B. magnesium
• C. iron
• D. iodine

Correct answer: A

Rationale: Phosphorus is the correct answer. It is a key component of cell membranes, being part of the phospholipid bilayer that provides structure and controls the movement of substances in and out of cells. Magnesium, iron, and iodine do not serve as principal components of cell membranes. Magnesium is involved in various enzymatic reactions, iron is essential for oxygen transport, and iodine plays a role in thyroid hormone synthesis.

2. The nurse is caring for an infant whose parent reports the infant takes a bottle to go to sleep. What should the nurse instruct to prevent baby bottle tooth decay?

• A. Water
• B. Milk
• C. Iron-fortified formula
• D. Unsweetened fruit juice

Correct answer: A

Rationale: The correct answer is A, Water. Water is recommended to prevent baby bottle tooth decay caused by sugary substances present in milk, formula, or fruit juice. Water does not contain sugars that can contribute to tooth decay, unlike the other options. Milk, formula, and unsweetened fruit juice can all lead to tooth decay if the baby falls asleep with them in their mouth, as the sugars can linger on the teeth and cause decay over time. Iron-fortified formula, although beneficial for the infant's nutrition, still contains sugars that can be harmful to the teeth.

3. Intrinsic factor from the stomach is needed for the absorption of which vitamin?

• A. vitamin B12
• B. folate
• C. niacin
• D. vitamin B6

Correct answer: A

Rationale: The correct answer is A: vitamin B12. Intrinsic factor is a glycoprotein produced by the stomach that is necessary for the absorption of vitamin B12 in the small intestine. Vitamin B12 binds to intrinsic factor in the stomach, forming a complex that is then absorbed in the ileum. This absorption process is crucial for preventing vitamin B12 deficiency. Choices B, C, and D are incorrect because they do not require intrinsic factor for absorption. Folate is absorbed in the small intestine through a different mechanism, niacin can be absorbed in the small intestine without the need for intrinsic factor, and vitamin B6 does not rely on intrinsic factor for absorption.

4. In the hospital, when you need the medical record of a discharged patient for research you will request permission through:

• A. Doctor in charge
• B. The hospital director
• C. The nursing service
• D. Medical records section

Correct answer: C

Rationale: Effective nursing care involves comprehensive assessments that address all aspects of a patient's condition, ensuring that interventions are appropriately targeted and outcomes are optimized.

5. Which of the following questions illustrates the group role of encourager?

• A. What were you saying?
• B. Who wants to respond next?
• C. Where do you go from here?
• D. Why haven’t we heard from you?

Correct answer: B

Rationale: Nursing interventions should be grounded in a deep understanding of the physiological processes involved, ensuring that care provided is both effective and efficient.

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