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HESI PN Nutrition Practice Exam
1. In the scientific method, a tentative solution to a problem is called a what?
- A. theory
- B. prediction
- C. hypothesis
- D. correlation
Correct answer: C
Rationale: In the scientific method, a hypothesis is a tentative solution or educated guess that is tested through research. A theory (choice A) is a well-substantiated explanation based on evidence and extensive testing. A prediction (choice B) is a statement about what will happen in the future based on existing knowledge. Correlation (choice D) refers to a mutual relationship between two or more things, indicating how they may change together but not providing a solution to a problem.
2. Why is randomization important in a scientific experiment?
- A. To minimize the impact of confounding variables.
- B. To eliminate bias in the assignment of subjects to groups.
- C. To contribute to the accuracy and validity of the experiment's results.
- D. To prevent systematic differences between groups.
Correct answer: B
Rationale: Randomization is crucial in a scientific experiment to eliminate bias in the assignment of subjects to groups. By randomly assigning subjects, it helps ensure that any differences observed in the outcomes are due to the experimental treatment and not to preexisting differences between groups. Choice A is incorrect because randomization does not guarantee representativeness but rather minimizes the impact of confounding variables. Choice C is not entirely accurate; while randomization can contribute to accuracy and validity, its primary purpose is to reduce bias. Choice D is incorrect as the goal of randomization is not to balance the number of subjects but to prevent systematic differences between groups.
3. What is an important aspect of managing a child with ADHD?
- A. Increasing academic workload
- B. Consistent behavior management strategies
- C. Restricting all physical activity
- D. Encouraging solitary activities
Correct answer: B
Rationale: Consistent behavior management strategies are crucial when managing a child with ADHD. By implementing consistent strategies, such as clear rules, positive reinforcement, and structure, it helps the child improve focus, manage impulsivity, and regulate their behavior. Choice A, 'Increasing academic workload,' is incorrect as overwhelming a child with ADHD with more academic tasks can exacerbate their symptoms. Choice C, 'Restricting all physical activity,' is also incorrect as physical activity is beneficial for children with ADHD to release excess energy and improve focus. Choice D, 'Encouraging solitary activities,' is not ideal as social interaction and engagement with others are important for a child's development and well-being.
4. 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.
5. What is the primary symptom of a urinary tract infection in young children?
- A. Frequent urination
- B. Abdominal pain
- C. Vomiting
- D. Fever
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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