what is one characteristic of vitamins that differentiates them from minerals
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HESI PN Nutrition Practice Exam

1. What is one characteristic that differentiates vitamins from minerals?

Correct answer: A

Rationale: The correct answer is A. Vitamins are organic compounds, containing carbon, which is a key characteristic that differentiates them from minerals. Choice B is incorrect because vitamins do not provide energy; they are not a source of calories. Choice C is incorrect as both vitamins and minerals are considered micronutrients due to being essential in small amounts. Choice D is incorrect because while it is true that vitamins are needed in small amounts, this is not the characteristic that sets them apart from minerals.

2. How should a healthcare provider address the nutritional needs of a child with chronic kidney disease?

Correct answer: B

Rationale: Reducing sodium and phosphorus intake is crucial in managing chronic kidney disease in children because it helps prevent complications such as electrolyte imbalances and bone problems. High protein intake can actually be harmful to the kidneys in this condition as it can lead to increased waste production. A high-fat diet is not recommended as it can contribute to heart and blood vessel problems. Encouraging frequent sugary snacks can lead to further complications like obesity and diabetes, which are not beneficial for a child with chronic kidney disease.

3. What is a common symptom of a vitamin D deficiency in children?

Correct answer: B

Rationale: Bone pain and tenderness are indeed common symptoms of vitamin D deficiency in children. Vitamin D plays a crucial role in bone health and growth. The deficiency can lead to weakened bones, causing pain and tenderness. Choices A, C, and D are incorrect. Frequent infections are not a typical symptom of vitamin D deficiency in children; excessive thirst is more commonly associated with conditions like diabetes, and unexplained bruising is not directly linked to vitamin D deficiency.

4. What is a common treatment for a child with iron-deficiency anemia?

Correct answer: A

Rationale: Iron supplements are the correct choice for treating iron-deficiency anemia in children. Iron supplements help replenish the low iron levels in the body, addressing the underlying cause of the anemia. High-protein diets may be beneficial for overall health but are not the primary treatment for iron-deficiency anemia. Vitamin B12 injections are used to treat B12 deficiency anemia, a different type of anemia. Sodium chloride solution is not a treatment for anemia and is typically used for hydration purposes.

5. What is one major weakness of a laboratory-based study?

Correct answer: C

Rationale: One major weakness of laboratory-based studies is that results from animal testing cannot always be applied to human beings. This limitation arises due to the inherent biological differences between animals and humans, making the generalization of findings challenging. While costs may be a concern in some cases, they do not represent a universal weakness of laboratory-based studies. Findings in such studies can be replicated to ensure validity, and experimental variables can be effectively controlled in a laboratory setting. Choice C is the correct answer because the translatability of results from animal studies to humans is a significant challenge in laboratory-based research, impacting the direct application of findings to human health and well-being.

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