which mineral is a principal component of cell membranes
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Nursing Elites

ATI RN

ATI Nutrition Proctored Exam 2023

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

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. A nurse is providing discharge teaching for a client who has acute pancreatitis and has a prescription for fat-soluble vitamin supplements. The nurse should instruct the client to take a supplement for which of the following?

Correct answer: A

Rationale: In acute pancreatitis, malabsorption of fat-soluble vitamins can occur due to pancreatic enzyme insufficiency. Vitamin A is a fat-soluble vitamin that may need supplementation in this case. Vitamin B1 (thiamine), Vitamin C, and Vitamin B12 are water-soluble vitamins and are not typically affected by pancreatic enzyme insufficiency in acute pancreatitis. Therefore, the correct supplement for the client with acute pancreatitis is Vitamin A.

3. A nurse is caring for a client with a major burn injury and is receiving TPN. Which of the following lab tests is the priority for the nurse to use to confirm the client is receiving adequate nutrition?

Correct answer: D

Rationale: Prealbumin is a sensitive indicator of protein status and nutrition, making it a priority for assessing nutritional adequacy in clients receiving TPN. Iron, magnesium, and folic acid levels are important for overall health but do not specifically indicate nutritional adequacy in the context of TPN administration.

4. Clients with type 2 diabetes are most likely to achieve metabolic control if they:

Correct answer: A

Rationale: Weight loss improves insulin sensitivity and glycemic control, making it a key strategy in managing type 2 diabetes.

5. To follow a healthy diet, a person should be sure that:

Correct answer: D

Rationale: The Acceptable Macronutrient Distribution Range (AMDR) suggests that 45-65% of total daily calories should come from carbohydrates.

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