Nursing Elites

1. What is the primary function of platelets in the blood?

• A. To carry oxygen
• B. To clot blood
• C. To fight infection
• D. To transport nutrients

Correct answer: B

Rationale: The correct answer is B: 'To clot blood.' Platelets play a crucial role in the clotting process, forming a plug at the site of blood vessel injury to prevent excessive bleeding. While red blood cells carry oxygen, white blood cells fight infection, and nutrients are transported by plasma, platelets are specifically responsible for blood clotting. Choice A is incorrect because red blood cells are responsible for carrying oxygen. Choice C is incorrect because white blood cells are primarily involved in fighting infection. Choice D is incorrect as the transport of nutrients is mainly carried out by plasma, not platelets.

2. A scientist is trying to determine how much poison will kill a rat the fastest. Which of the following statements is an example of an appropriate hypothesis?

• A. Rats that are given lots of poison seem to die quickly.
• B. Does the amount of poison affect how quickly the rat dies?
• C. The more poison a rat is given, the quicker it will die.
• D. Poison is fatal to rats.

Correct answer: C

Rationale: A valid hypothesis must be a testable statement that predicts a relationship between variables. Option C is the only statement that presents a clear cause-and-effect relationship between the amount of poison given and the time it takes for the rat to die. Option A is descriptive without predicting an outcome, option B is a question rather than a statement, and option D is a general fact about poison and rats, lacking a specific hypothesis for testing.

3. Certain medications can suppress the immune system to treat autoimmune diseases or prevent organ rejection after transplants. What is a potential risk associated with immunosuppressive drugs?

• A. Increased risk of developing allergies
• B. Increased susceptibility to infections
• C. Both A and B
• D. Neither A nor B

Correct answer: B

Rationale: Immunosuppressive drugs work by suppressing the immune system's activity, which can increase the risk of infections as the body's ability to fight off pathogens is compromised. While allergies can be a side effect of some medications, the primary concern with immunosuppressive drugs is the increased susceptibility to infections. Therefore, the correct answer is B, increased susceptibility to infections. Choice A, 'Increased risk of developing allergies,' is incorrect as the primary risk associated with immunosuppressive drugs is not related to allergies. Choice C, 'Both A and B,' is incorrect as the main concern is the increased susceptibility to infections rather than developing allergies. Choice D, 'Neither A nor B,' is incorrect as there is a known risk of increased susceptibility to infections when using immunosuppressive drugs.

4. Which option best defines a fable?

• A. A melancholic poem lamenting the subject's death
• B. An oral tradition influenced by culture
• C. A story with events that occur in threes and sevens
• D. A short story with animals, fantastic creatures, or other forces within nature

Correct answer: D

Rationale: A fable is a short story that typically features animals, fantastic creatures, or other forces within nature as characters. These characters often possess human-like qualities and behavior, and the story is intended to convey a moral lesson or message to the reader. The use of animals or other natural elements is a common characteristic of fables, distinguishing them from other types of stories or literary works. Options A, B, and C are incorrect because they do not accurately describe the defining characteristics of a fable.

5. What is the main idea of the passage?

• A. Manufacturers of dietary supplements must adhere to good manufacturing practices.
• B. The FDA has a specialized program for regulating dietary supplements.
• C. The federal government prosecutes individuals who deceive the public.
• D. The FDA operates under the federal government.

Correct answer: B

Rationale: The main idea of the passage is that the FDA has a specialized program for regulating dietary supplements. The passage explains how the FDA regulates dietary supplements differently from drugs, focusing on the requirements for marketing, good manufacturing practices, monitoring safety, and taking action against unsafe products. Choice A is incorrect because while it mentions good manufacturing practices, it's not the central idea of the passage. Choice C is incorrect as there is no emphasis on prosecuting individuals in the passage. Choice D is incorrect because stating that the FDA is part of the federal government is not the main idea discussed in the passage.

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