Nursing Elites

1. You have been asked to help a top nutrition researcher conduct human experiments on vitamin C. As the subjects walk into the laboratory, you distribute all the vitamin C pill bottles to the girls and all the placebo pill bottles to the boys. What should you have done?

• A. Giving all the boys the vitamin C and the girls the placebo, and telling them what they were getting.
• B. Distributing the bottles randomly, randomizing the subjects, and telling them what they were getting.
• C. Telling the subjects which group they were in, but preventing yourself from knowing the contents of the pill bottles.
• D. Preventing yourself from knowing what is in the pill bottles, and distributing the bottles randomly to the subjects.

Correct answer: D

Rationale: The correct approach in a scientific experiment is to prevent yourself from knowing the contents of the pill bottles and distribute them randomly to the subjects. This randomization helps to avoid bias and ensures that the results are not influenced by preconceived notions. Option A is incorrect because it introduces gender bias by assigning pills based on gender. Option B is incorrect as it mentions telling the subjects what they are getting, which could lead to placebo effects. Option C is incorrect as it suggests disclosing group information to the subjects, which can also introduce bias.

2. Food energy is commonly expressed in kilocalories and in what other unit?

• A. kilojoules
• B. kilograms
• C. kilometers
• D. kilonewtons

Correct answer: A

Rationale: Food energy is commonly expressed in kilocalories and kilojoules. Kilocalories and kilojoules are both units of energy commonly used to measure the energy content of food. Kilograms, kilometers, and kilonewtons are units of mass, distance, and force, respectively, and are not used to express food energy.

3. Which of the following best describes the purpose of dietary guidelines?

• A. To ensure food safety and sanitation.
• B. To promote overall health and reduce the risk of chronic diseases.
• C. To prevent foodborne illnesses.
• D. To provide recommendations for physical activity.

Correct answer: B

Rationale: The correct answer is B: 'To promote overall health and reduce the risk of chronic diseases.' Dietary guidelines aim to improve public health by providing recommendations on dietary patterns and nutrient intake. While ensuring food safety and sanitation (choice A) is important, it is not the primary purpose of dietary guidelines. Preventing foodborne illnesses (choice C) is more related to food safety practices rather than dietary guidelines. Recommendations for physical activity (choice D) are important for overall health but are separate from dietary guidelines, which primarily focus on nutrition.

4. What is one major weakness of a laboratory-based study?

• A. The costs are typically prohibitive.
• B. Findings are difficult to replicate.
• C. Results from animal testing cannot be applied to human beings.
• D. Experimental variables cannot be easily controlled.

Correct answer: C

Rationale: One major weakness of laboratory-based studies is that results from animal testing cannot always be applied to human beings. This limitation arises due to the inherent biological differences between animals and humans, making the generalization of findings challenging. While costs may be a concern in some cases, they do not represent a universal weakness of laboratory-based studies. Findings in such studies can be replicated to ensure validity, and experimental variables can be effectively controlled in a laboratory setting. Choice C is the correct answer because the translatability of results from animal studies to humans is a significant challenge in laboratory-based research, impacting the direct application of findings to human health and well-being.

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

• A. Provide behavioral therapy and support
• B. Increase sugar intake
• C. Restrict all forms of exercise
• D. Avoid medication use

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.

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