what is one benefit of using controls in an experiment
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Nutrition Final Exam Quizlet

1. 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.

2. Which nutrient is an organic compound?

Correct answer: D

Rationale: Vitamin C is the correct answer because it is an organic compound containing carbon, which is a defining characteristic of organic compounds. Salt (choice A), water (choice B), and calcium (choice C) are inorganic compounds that do not contain carbon. Inorganic compounds are typically lacking carbon-hydrogen bonds, unlike organic compounds. Therefore, choices A, B, and C are incorrect in the context of being organic compounds.

3. How should a healthcare professional handle a child with a new diagnosis of ADHD?

Correct answer: A

Rationale: When dealing with a child newly diagnosed with ADHD, providing behavioral therapy and support is crucial. This approach helps the child learn coping strategies, improve social skills, and manage their symptoms effectively. Choice B, increasing sugar intake, is incorrect as there is no evidence linking sugar consumption to ADHD. Choice C, restricting all forms of exercise, is inappropriate as regular physical activity can actually benefit children with ADHD by helping them release excess energy and improve focus. Choice D, avoiding medication use, may not be the best course of action as medication prescribed by a healthcare professional can sometimes be beneficial in managing ADHD symptoms when combined with other therapies.

4. What should be assessed in an infant diagnosed with hypertrophic pyloric stenosis?

Correct answer: D

Rationale: In hypertrophic pyloric stenosis, an olive-shaped mass can often be palpated in the infant's abdomen, which is a hallmark sign of this condition. This mass is located in the right upper quadrant of the abdomen, right of the midline. Choices A, B, and C are incorrect because while infants with hypertrophic pyloric stenosis may experience vomiting (not diarrhea), gastric pain, and irritability, and have feeding difficulties, the key assessment finding specific to this condition is the palpable olive-shaped mass in the abdomen.

5. What is the primary symptom of a urinary tract infection in young children?

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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