in the scientific method a tentative solution to a problem is called a what
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HESI PN Nutrition Practice Exam

1. In the scientific method, a tentative solution to a problem is called a what?

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. How should the healthcare provider respond to a parent concerned about a child's short stature?

Correct answer: C

Rationale: When a parent expresses concern about a child's short stature, the initial approach should involve advising monitoring for a few years before considering any interventions. This allows for observation of the child's growth pattern and any potential underlying issues. Suggesting a nutritionist (Choice A) may not be necessary if there are no signs of nutritional deficiencies. Recommending growth hormone injections (Choice B) is premature without proper evaluation and diagnosis. Referring for a genetic evaluation (Choice D) can be considered later if monitoring shows atypical growth patterns or other concerning factors.

3. The motive for a person who alters their diet due to religious convictions is most likely related to their ___.

Correct answer: A

Rationale: The correct answer is A, 'values.' When individuals alter their diet due to religious convictions, it is primarily driven by their personal or cultural values associated with their faith. This choice reflects the strong influence that religious beliefs can have on dietary choices. Choice B, 'body image,' is incorrect because altering one's diet for religious reasons is more about spiritual beliefs than physical appearance. Choice C, 'ethnic heritage,' is incorrect as it pertains more to cultural background rather than religious convictions. Choice D, 'functional association,' is incorrect as it does not directly relate to the motivation behind altering one's diet for religious reasons.

4. What will the treatment for a newly admitted child with cystic fibrosis center on?

Correct answer: A

Rationale: The correct answer is A: Chest physiotherapy. Treatment for cystic fibrosis focuses on chest physiotherapy and aerosol medications to manage and clear thick pulmonary secretions. Chest physiotherapy helps loosen and clear mucus from the lungs, aiding in breathing and reducing the risk of infections. Mucus-drying agents (choice B) are not typically used in the treatment of cystic fibrosis as the goal is to help clear mucus, not dry it. Prevention of diarrhea (choice C) is not a primary focus in the treatment of cystic fibrosis. Insulin therapy (choice D) is not relevant to cystic fibrosis, which primarily affects the respiratory and digestive systems.

5. 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).

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