what is the term for the study of how diet affects gene expression
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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 a common treatment for a child with a urinary tract infection (UTI)?

Correct answer: B

Rationale: Oral antibiotics are the correct choice for treating a child with a urinary tract infection (UTI). They are often prescribed to effectively address the infection and alleviate symptoms. Intravenous antibiotics (Choice A) are usually reserved for severe cases where oral antibiotics are not feasible or effective. Increased fluid intake (Choice C) can help in flushing out bacteria but is not a standalone treatment for UTIs. Topical antibiotics (Choice D) are not typically used to treat UTIs as they are more suited for skin infections.

3. What is the priority assessment for a child with suspected appendicitis?

Correct answer: D

Rationale: The priority assessment for a child with suspected appendicitis is 'Pain level.' Evaluating the pain level, particularly in the lower right quadrant, is crucial as it helps in determining the severity of the condition, leading to prompt diagnosis and treatment. Monitoring temperature, heart rate, and respiratory rate are important aspects of assessment; however, they are secondary to assessing the pain level in cases of suspected appendicitis. Pain assessment is key in diagnosing this condition since the classic presentation includes abdominal pain that often starts around the umbilicus and then localizes to the right lower quadrant.

4. What is a common sign of hypothyroidism in children?

Correct answer: C

Rationale: Dry skin and constipation are typical signs of hypothyroidism in children. Hypothyroidism results from an underactive thyroid gland, leading to symptoms such as dry skin and constipation. Weight loss (Choice A) is more commonly associated with hyperthyroidism, where the thyroid gland is overactive. Increased heart rate (Choice B) and elevated blood pressure (Choice D) are also more characteristic of hyperthyroidism rather than hypothyroidism. Therefore, the correct answer is dry skin and constipation (Choice C) when identifying signs of hypothyroidism in children.

5. What is a common symptom of Kawasaki disease?

Correct answer: A

Rationale: The correct answer is A. Persistent fever lasting more than 5 days is a hallmark symptom of Kawasaki disease, often accompanied by rash and conjunctivitis. Excessive vomiting (choice B), sudden weight gain (choice C), and decreased appetite (choice D) are not typically associated with Kawasaki disease. Therefore, choices B, C, and D can be eliminated as they do not align with the common symptoms of Kawasaki disease.

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