Nursing Elites

1. Almost all (99%) of the calcium in the body is used for?

• A. regulating the transmission of nerve impulses
• B. providing energy for cells
• C. providing rigidity for the bones
• D. regulating muscle contraction

Correct answer: C

Rationale: The correct answer is C: providing rigidity for the bones. Almost all of the calcium in the body is utilized for maintaining the strength and structure of bones and teeth. Calcium plays a crucial role in skeletal health by providing rigidity and support to the skeletal system. Choices A, B, and D are incorrect because while calcium is essential for various physiological functions like nerve transmission, cell energy production, and muscle contraction, the majority of calcium in the body is primarily allocated for bone health.

2. Which of the following treatments is not recommended for a child classified with no dehydration?

• A. Administering 1,000 ml to 1,400 ml within 4 hours
• B. Continuing feeding
• C. Allowing the child to take as much fluid as he wants
• D. Returning the child to the doctor if the condition worsens

Correct answer: B

Rationale: The correct answer is B. Continuing feeding is a recommended treatment for a child classified with no dehydration. This helps maintain the child's nutritional status and supports recovery. Options A, C, and D are appropriate interventions for a child with no dehydration. Option A ensures adequate fluid intake, option C promotes hydration, and option D ensures appropriate follow-up if the condition worsens.

3. Which set of guidelines is intended to assess nutrient adequacy or plan intake of a population group, not individuals?

• A. RDA
• B. EAR
• C. DRA
• D. UL

Correct answer: B

Rationale: The Estimated Average Requirement (EAR) is the correct choice because it is specifically designed to assess the nutrient adequacy of population groups, not individuals. The Recommended Dietary Allowance (RDA) (choice A) is the average daily level of intake sufficient to meet the nutrient requirements of nearly all (97%-98%) healthy individuals in a particular life stage and gender group. The Dietary Reference Intake (DRI) (choice C) includes the EAR, RDA, Adequate Intake (AI), and UL, making it a broader set of nutrient reference values. The Tolerable Upper Intake Level (UL) (choice D) is the highest average daily nutrient intake level that is likely to pose no risk of adverse health effects to almost all individuals in the general population.

4. 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.

5. Which food has the highest calcium content?

• A. soy products
• B. milk
• C. cereal grains
• D. dark green vegetables

Correct answer: B

Rationale: The correct answer is B, milk. Milk is known for being one of the best dietary sources of calcium, essential for bone health and various bodily functions. Soy products, cereal grains, and dark green vegetables are good sources of calcium as well, but milk generally has a higher calcium content compared to these options.

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