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 client is being instructed by a nurse about foods that should be included in a low-fiber diet. Which statement by the client indicates understanding?

Correct answer: D

Rationale: The correct answer is D because canned peaches are lower in fiber compared to the other options. Carrots, celery sticks, bran muffins, and oatmeal are high-fiber choices, which are not suitable for a low-fiber diet. Choosing canned peaches aligns with the requirements of a low-fiber diet.

3. A nurse is providing teaching to the parent of an infant about introducing solid foods. The nurse should recommend that which of the following foods be introduced first?

Correct answer: D

Rationale: When introducing solid foods to infants, it is recommended to start with iron-fortified cereal as it is easily digestible and a good source of iron, an important nutrient for infants around 6 months of age. Strained fruits are usually introduced later due to their natural sugars. Pureed meats can be introduced after iron-fortified cereals to provide additional protein and iron. Cooked egg whites should be avoided until the infant is at least one year old to reduce the risk of allergies.

4. All of the following are seen in a child with measles. Which one is not?

Correct answer: C

Rationale: Measles typically presents with symptoms like reddened eyes, coryza (inflammation of the mucous membrane in the nose), and cough. However, pustules are not a common symptom of measles. Pustules are more characteristic of conditions like chickenpox rather than measles. Understanding these distinctions is crucial for accurate diagnosis and appropriate treatment.

5. The only IV fluid compatible with blood products is:

Correct answer: D

Rationale: Understanding the underlying pathology and therapeutic techniques ensures that nursing care is not only reactive but also preventative, reducing the risk of complications.

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