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. What dietary modification is important for a child with celiac disease?

Correct answer: B

Rationale: The correct answer is B: Avoid gluten-containing foods. For a child with celiac disease, it is crucial to eliminate gluten from their diet to manage the condition effectively. Gluten triggers an immune response in individuals with celiac disease, leading to symptoms and damage to the small intestine. Choices A, C, and D are incorrect because increasing dairy intake, decreasing protein intake, or increasing fiber intake are not specific dietary modifications for managing celiac disease.

3. What is a primary goal of managing diabetes mellitus in children?

Correct answer: C

Rationale: The primary goal of managing diabetes mellitus in children is to ensure normal growth and development. This involves maintaining stable blood glucose levels to prevent complications. Option A is incorrect because promoting weight gain is not a primary goal in managing diabetes; rather, the aim is to maintain a healthy weight. Option B is not the primary goal; although it is important to prevent episodes of hypoglycemia, the main focus is on overall management. Option D is incorrect as optimizing blood sugar control is a means to achieve the primary goal, which is ensuring normal growth and development.

4. What is a common treatment for a child with iron-deficiency anemia?

Correct answer: A

Rationale: Iron supplements are the correct choice for treating iron-deficiency anemia in children. Iron supplements help replenish the low iron levels in the body, addressing the underlying cause of the anemia. High-protein diets may be beneficial for overall health but are not the primary treatment for iron-deficiency anemia. Vitamin B12 injections are used to treat B12 deficiency anemia, a different type of anemia. Sodium chloride solution is not a treatment for anemia and is typically used for hydration purposes.

5. What is one benefit of using controls in an experiment?

Correct answer: D

Rationale: The correct answer is D. Controls in an experiment ensure that the subjects are similar in all respects except for the treatment being tested. This allows for a fair comparison between the treatment group and the control group. Choice A is incorrect because the size of the groups is not the primary benefit of using controls. Choice B is incorrect as blinding, not controls, refers to subjects not knowing about the experiment. Choice C is incorrect as it pertains more to randomization than the use of controls.

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