Nursing Elites

1. The sheer number of people in the audience overwhelmed the actress as she peeked through the curtain before scene one. Which of the following correctly describes an error in the sentence above?

• A. The homophone 'sheer' should be 'shear.'
• B. The homophone 'peaked' should be 'peeked.'
• C. The homophone 'through' should be 'threw.'
• D. The homophone 'scene' should be 'seen.'

Correct answer: B

Rationale: The correct answer is B. In this context, 'peaked' should be 'peeked,' meaning to take a quick look. The other choices are incorrect: A is wrong because 'sheer' is the correct term referring to the absolute or complete number of people; C is incorrect as 'through' is the right term indicating looking by going across something; D is inaccurate as 'scene' is the correct term for a part of a play or film.

2. How does AIDS impair the immune system?

• A. AIDS targets and destroys Helper T-Cells, preventing the activation of Cytotoxic T-Cells or B-Cells.
• B. IgE stimulates mast cells to release excessive histamine.
• C. IgE inhibits mast cells from releasing sufficient histamine.
• D. Helper T-Cells deceive the body into attacking itself.

Correct answer: A

Rationale: AIDS targets and destroys Helper T-Cells, which play a crucial role in coordinating the immune response. By affecting these cells, AIDS prevents the activation of other important immune cells like Cytotoxic T-Cells or B-Cells. This disruption in the immune system's communication and response mechanisms leads to immune system failure and increased vulnerability to infections. Choices B and C are incorrect because they refer to the role of IgE in allergic reactions, which is not directly related to how AIDS impairs the immune system. Choice D is also incorrect as Helper T-Cells being destroyed in AIDS is not about deceiving the body into attacking itself, but rather the direct impact on immune system function.

3. Which of the following is a characteristic of unsaturated fatty acids?

• A. They are solid at room temperature.
• B. They contain only single bonds.
• C. They have a higher melting point.
• D. They contain double or triple bonds.

Correct answer: D

Rationale: The correct answer is D. Unsaturated fatty acids are characterized by the presence of double or triple bonds in their carbon chain. These bonds introduce kinks in the chain, preventing tight packing, and resulting in a lower melting point compared to saturated fatty acids. Choice A is incorrect because unsaturated fatty acids are typically liquid at room temperature due to their kinked structure. Choice B is incorrect because unsaturated fatty acids contain double or triple bonds, not only single bonds. Choice C is incorrect as unsaturated fatty acids have a lower melting point compared to saturated fatty acids.

4. Based on the information provided within the passage, which of the following can be inferred about King James II's son?

• A. Considering his resemblance to King James II, the young James was likely the legitimate child of the king and the queen.
• B. Given the queen's previous inability to produce a healthy child, there were suspicions about the prince's legitimacy by the English and the Lowland Scots.
• C. James 'the Pretender' was not as popular among the Highland clans as his son Bonnie Prince Charlie.
• D. James was unable to acquire the resources needed to build the army and plan the invasion that his son succeeded in doing.

Correct answer: A

Rationale: The passage describes that the young James bore a strong resemblance to King James II, suggesting that he was likely the legitimate child of the king and the queen. This resemblance supports the inference that the young James was indeed their offspring. Choice B is incorrect because although there were suspicions about the prince's legitimacy, the passage does not mention these suspicions being based on the queen's previous inability to produce a healthy child. Choice C is incorrect as the passage does not compare the popularity of James 'the Pretender' among the Highland clans to his son Bonnie Prince Charlie. Choice D is also incorrect as the passage does not mention James's inability to acquire resources for building an army or planning an invasion.

5. Antigenic variation, a common strategy used by some viruses, allows them to:

• A. Produce toxins
• B. Evade the immune system
• C. Survive outside a host
• D. Replicate rapidly

Correct answer: B

Rationale: Antigenic variation is a strategy used by some viruses to evade the host's immune response. By constantly changing their surface antigens, viruses can avoid recognition and destruction by the immune system. This allows the virus to persist in the host and continue replicating, leading to prolonged infection and potential transmission to other hosts. Antigenic variation does not directly involve the production of toxins, survival outside a host, or rapid replication, making options A, C, and D incorrect in this context.

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