what is the term for the study of how diet affects gene expression
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Nursing Elites

HESI LPN

Nutrition Final Exam

1. What is the term for the study of how diet affects gene expression?

Correct answer: B

Rationale: Nutrigenomics is the study of how diet affects gene expression, influencing health outcomes and disease risk. Epigenetics (choice A) involves changes in gene expression or cellular phenotype caused by mechanisms other than changes in the underlying DNA sequence. Genomics (choice C) is the study of an organism's entire genome. Genetics (choice D) is the study of heredity and the variation of inherited characteristics.

2. What is the main function of proteins in the body?

Correct answer: A

Rationale: The main function of proteins in the body is to provide structural components like muscles, skin, and bones. Proteins are essential for growth, repair, and maintenance of body tissues. While proteins play a role in various physiological functions, their primary function is not to assist in the absorption of vitamins (Choice B), help with the transport of nutrients in the blood (Choice C), or maintain fluid balance (Choice D).

3. What should the nurse anticipate as challenging in caring for a child with acute glomerulonephritis?

Correct answer: C

Rationale: The correct answer is C: Bed rest. Implementing bed rest can be challenging, especially in active children, but it's necessary to manage the symptoms of acute glomerulonephritis. Forced fluids (choice A) may be required to maintain hydration but are not typically challenging. Increased feedings (choice B) and frequent position changes (choice D) are not primary interventions in the care of a child with acute glomerulonephritis.

4. How should a healthcare professional approach the care of a child with a newly diagnosed type 1 diabetes?

Correct answer: A

Rationale: Corrected Rationale: Emphasizing the importance of blood glucose monitoring is crucial for managing type 1 diabetes effectively. Monitoring blood glucose levels helps in maintaining optimal control of the condition, adjusting treatment plans as necessary, and preventing complications. Choice B is incorrect because insulin therapy is the mainstay treatment for type 1 diabetes to regulate blood sugar levels. Choice C is incorrect because while diet is important, encouraging a high-carbohydrate diet can lead to fluctuations in blood sugar levels. Choice D is incorrect because alternative therapies should not replace standard medical treatment like insulin therapy in type 1 diabetes management.

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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