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 the primary intervention for a child experiencing a tonic-clonic seizure?

Correct answer: C

Rationale: The primary intervention for a child experiencing a tonic-clonic seizure is to protect them from injury. Placing the child in a prone position can be dangerous as it may lead to further harm due to the risk of aspiration or airway obstruction. Administering intravenous fluids is not recommended during a seizure. Performing mouth-to-mouth resuscitation is also not indicated as the child will resume breathing spontaneously after the seizure stops. Ensuring the child's safety and preventing injury by removing harmful objects and cushioning their head is essential until the seizure subsides.

3. What is the recommended first step in the management of a child with a suspected head injury?

Correct answer: B

Rationale: The correct first step in managing a child with a suspected head injury is to assess the child's level of consciousness. This assessment is crucial as it helps determine the severity of the injury and guides further management. Administering pain medication (Choice A) should not be done before assessing the level of consciousness. Performing a CT scan (Choice C) may be necessary but is not the initial step. Monitoring for seizures (Choice D) is important but comes after assessing the child's level of consciousness.

4. What is a common sign of developmental dysplasia of the hip (DDH) in infants?

Correct answer: B

Rationale: Limited abduction of the hip is a common sign of developmental dysplasia of the hip in infants. It indicates possible hip dislocation or instability, making it a key clinical manifestation to assess for DDH. Dislocated patella (Choice A) is not typically associated with DDH. Swelling of the knee (Choice C) and hyperextension of the leg (Choice D) are not specific signs linked to DDH in infants, further supporting why they are incorrect choices.

5. What is a key intervention for a child with a new diagnosis of type 1 diabetes?

Correct answer: A

Rationale: The correct answer is A: Insulin administration. When a child is diagnosed with type 1 diabetes, insulin administration is a crucial intervention. Insulin helps regulate blood glucose levels by enabling cells to take in glucose from the bloodstream. Without sufficient insulin, blood glucose levels can become dangerously high, leading to various complications. Increased dietary fat intake (choice B) is not a recommended intervention for type 1 diabetes management, as it can contribute to weight gain and other health issues. Restricted fluid intake (choice C) is also not appropriate, as adequate hydration is essential for overall health. Routine physical examinations (choice D) are important but are not the primary intervention needed to manage type 1 diabetes.

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