what does the term essential nutrient refer to
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HESI PN Nutrition Practice Exam

1. What does the term 'essential nutrient' refer to?

Correct answer: C

Rationale: The correct answer is C. An essential nutrient is a substance that is necessary for normal body functioning but cannot be synthesized in adequate amounts by the body, therefore it must be obtained from the diet. Choices A, B, and D are incorrect because essential nutrients are not synthesized by the body, they are necessary for body functioning, and they are not typically stored in the body for long periods.

2. What is the primary goal in managing a child with chronic asthma?

Correct answer: A

Rationale: The primary goal in managing a child with chronic asthma is to achieve and maintain symptom control. This helps improve the child's quality of life by reducing asthma symptoms and exacerbations. Choice B is incorrect because avoiding all physical activity is not recommended for children with asthma; in fact, regular physical activity can be beneficial. Choice C is incorrect as increasing dietary sodium is not a primary goal in managing asthma. Choice D is incorrect because restricting medication use can lead to uncontrolled asthma symptoms and complications.

3. 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.

4. What is an important dietary consideration for a child with celiac disease?

Correct answer: B

Rationale: A gluten-free diet is crucial for managing celiac disease in children because it helps prevent intestinal damage and alleviate symptoms. Gluten is a protein found in wheat, barley, and rye, and it triggers an immune response in individuals with celiac disease, damaging the lining of the small intestine. Therefore, choices A, C, and D are incorrect. While iron intake is important for overall health, a child with celiac disease can still meet their iron needs through sources that are naturally gluten-free or fortified. A high-protein diet or a low-sodium diet are not specifically required for managing celiac disease.

5. What is the primary symptom of a urinary tract infection in young children?

Correct answer: D

Rationale: The correct answer is D, Fever. In young children, fever is a common primary symptom of a urinary tract infection, often accompanied by irritability and discomfort. Frequent urination (Choice A) is a symptom more commonly seen in adults with UTIs. While abdominal pain (Choice B) and vomiting (Choice C) can be present, they are not as primary as fever in young children with UTIs.

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