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HESI PN Nutrition Practice Exam
1. Why is peer review important in scientific research?
- A. To expedite publication of results.
- B. To facilitate the replication of studies.
- C. To verify the accuracy and validity of research findings.
- D. To enhance the credibility of the research.
Correct answer: C
Rationale: Peer review is crucial in scientific research to verify the accuracy and validity of research findings. By subjecting research papers to evaluation by experts in the field, peer review ensures that the study's methods, results, and conclusions are robust and reliable. This process helps to maintain high standards of quality in scientific publications, providing credibility to the research. Choices A and D are incorrect because the primary purpose of peer review is not to expedite publication or solely enhance credibility; its core function is to validate the research's accuracy and validity. Choice B, while beneficial, is not the primary reason for peer review; replication is a byproduct of the rigorous evaluation of research methods and findings.
2. Following diarrhea, which foods should be offered to the school-age child?
- A. Apricots and peaches
- B. Chocolate milk
- C. Applesauce and milk
- D. Bananas and rice
Correct answer: D
Rationale: After a bout of diarrhea, it is important to offer foods that are gentle on the stomach and help in recovery. Bananas and rice are commonly recommended as they are easily digestible and can help firm up stools. Apricots, peaches, and applesauce may be too acidic and fibrous, potentially aggravating the stomach. Chocolate milk is high in sugar and can worsen diarrhea due to its lactose content.
3. What dietary recommendation should be made to a child with iron-deficiency anemia?
- A. Increase intake of dairy products
- B. Include high-iron foods like spinach and meat
- C. Decrease protein intake
- D. Avoid all grains
Correct answer: B
Rationale: The correct recommendation for a child with iron-deficiency anemia is to include high-iron foods like spinach, red meat, and beans in their diet. These foods are rich sources of iron and can help address the deficiency. Choice A is incorrect as dairy products do not provide significant iron content. Choice C is incorrect because protein intake does not need to be decreased; in fact, lean meats are good sources of iron. Choice D is also incorrect as whole grains can be a part of a healthy diet and do not need to be avoided in this case.
4. Which lab result should be abnormal in a child with hemophilia?
- A. Prothrombin time
- B. Bleeding time
- C. Platelet count
- D. Partial thromboplastin time
Correct answer: D
Rationale: In a child with hemophilia, the lab result that should be abnormal is the partial thromboplastin time (PTT). Hemophilia is a disorder that affects the clotting factors in the intrinsic pathway of coagulation, leading to a prolonged PTT. Prothrombin time (Choice A) assesses the extrinsic pathway and should be normal in hemophilia. Bleeding time (Choice B) evaluates platelet function, which is typically normal in hemophilia. Platelet count (Choice C) measures the number of platelets and is not directly affected by hemophilia.
5. Non-nutrient substances found in plant foods that may demonstrate biological activity in the body are commonly known as ___
- A. Bioenhancements
- B. Inorganic fibers
- C. Phytochemicals
- D. Phytoactive chemicals
Correct answer: C
Rationale: Phytochemicals are bioactive compounds found in plant foods that may affect health. They are known for their potential health benefits, such as antioxidant and anti-inflammatory properties. Choices A, B, and D are incorrect. 'Bioenhancements' is not a term used to describe non-nutrient substances in plant foods. 'Inorganic fibers' do not refer to bioactive compounds found in plants. 'Phytoactive chemicals' is not a commonly used term in nutrition science to describe these compounds.
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