Nursing Elites

1. Melatonin is a hormone produced by the pineal gland. What is its primary function?

• A. Regulate blood pressure
• B. Stimulate the digestive system
• C. Control sleep-wake cycles
• D. Maintain bone density

Correct answer: C

Rationale: Melatonin is primarily known for its role in controlling sleep-wake cycles. It is produced by the pineal gland in response to darkness, helping signal the body that it is time to sleep. Melatonin levels typically rise in the evening and stay elevated throughout the night, promoting sleep. Choices A, B, and D are incorrect as melatonin's primary function is not to regulate blood pressure, stimulate the digestive system, or maintain bone density. While melatonin may have some indirect effects on these functions, its main role lies in regulating the circadian rhythm and promoting a restful sleep cycle.

2. The author would be most likely to agree with which of the following statements?

• A. Smokers should only quit cold turkey.
• B. Other substances are more addictive than tobacco.
• C. Smokers should quit for any reason that makes them stop.
• D. People who want to smoke should advocate for reduced taxes.

Correct answer: C

Rationale: The author would likely agree that any reason to quit smoking is valid, based on their anti-smoking stance. The provided extract extensively discusses the harmful effects of smoking, the addictive nature of nicotine, and the negative consequences associated with tobacco products. The author emphasizes the health risks, financial burden, and social implications of smoking, promoting the idea that smokers should quit for any reason that helps them stop. Choice A, suggesting that smokers should only quit cold turkey, is too restrictive and doesn't consider individual differences in quitting methods. Choice B, stating that other substances are more addictive than tobacco, is not directly supported by the extract, which highlights the extreme addictiveness of nicotine. Choice D, proposing that people who want to smoke should advocate for reduced taxes, goes against the anti-smoking stance presented in the extract, which highlights the negative impact of smoking and high tobacco prices.

3. Which of the following statements would be LEAST relevant in a formal essay about artist Salvador Dalí?

• A. Although his works are famed for their dream-like qualities, Dalí executed them with realism reminiscent of the Renaissance masters.
• B. Salvador Dalí’s eccentricity extended beyond his artwork, affecting the strange public persona he created, which can be witnessed in his numerous television appearances.
• C. I’ve always found Dalí’s painting The Persistence of Memory to be really disturbing for some reason.
• D. Although Salvador Dalí is best known for his paintings, he also was active in cinema and collaborated with such filmmakers as Luis Bunuel and Alfred Hitchcock.

Correct answer: C

Rationale: Option C is subjective and personal, making it less suitable for a formal essay about Salvador Dalí. In formal writing, it is important to maintain objectivity and focus on factual information rather than personal opinions. Choices A, B, and D provide relevant information about Dalí, his artwork, and his collaborations, which are more appropriate for inclusion in a formal essay.

4. Solve the equation 8x − 6 = 3x + 24. Which of the following is the correct solution?

• A. x = 2.5
• B. x = 3.6
• C. x = 5
• D. x = 6

Correct answer: D

Rationale: To solve the equation 8x − 6 = 3x + 24, start by adding 6 to both sides: 8x − 6 + 6 = 3x + 24 + 6, which simplifies to 8x = 3x + 30. Next, subtract 3x from both sides to get 5x = 30. Finally, divide both sides by 5 to solve for x: x = 6. Therefore, the correct solution is x = 6. Choices A, B, and C are incorrect because they do not result from the correct algebraic manipulation of the equation.

5. Which instrument is used to measure the mass of an object?

• A. thermometer
• B. balance scale
• C. scale
• D. caliper

Correct answer: B

Rationale: A balance scale is specifically designed to measure the mass of an object in grams or kilograms. It works based on the principle of balancing the unknown mass against a known mass. A thermometer is used to measure temperature, not mass, so choice A is incorrect. Choice C, 'scale,' is a bit vague and can refer to different types of scales, but a balance scale is the specific instrument used for measuring mass. Choice D, 'caliper,' is used for measuring dimensions such as length, width, or thickness, not mass.

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