Nursing Elites

1. What is the main component of the cell membrane?

• A. Proteins
• B. Carbohydrates
• C. Lipids
• D. Nucleic acids

Correct answer: C

Rationale: The main component of the cell membrane is the phospholipid bilayer, which is primarily composed of lipids. Lipids form a barrier that separates the interior of the cell from the external environment, providing structural integrity and regulating the passage of substances in and out of the cell. Proteins are also essential components of the cell membrane, serving various functions such as transport, signaling, and cell recognition. Carbohydrates are present in the form of glycoproteins and glycolipids on the cell membrane surface, contributing to cell-cell recognition. Nucleic acids are not a primary component of the cell membrane.

2. The number of people _____ from other counties to the United States has caused a shift in unemployment in the textile market.

• A. Emigrating
• B. Immigrating
• C. Migrating
• D. Emigrated

Correct answer: B

Rationale: The correct answer is 'Immigrating' because it refers to people coming to live permanently in a foreign country. 'Emigrating' (Choice A) means leaving one's own country to settle permanently in another, which does not fit the context of people coming into the United States. 'Migrating' (Choice C) is a general term for moving from one place to another without emphasizing the aspect of settling in a new country. 'Emigrated' (Choice D) is the past tense of emigrate and does not convey the ongoing action of people moving to the United States.

3. Choose the meaning of the word 'exposure' in the following sentence: 'People with weakened immune systems should avoid exposure to flu.'

• A. Disclosure
• B. Pretense
• C. Contact
• D. Display

Correct answer: C

Rationale: In this sentence, the word 'exposure' is used to refer to coming in contact with the flu virus. Therefore, in this context, the meaning of 'exposure' is related to 'contact.' Choices A, B, and D are incorrect. 'Disclosure' means revealing information, 'pretense' means pretending, and 'display' means to show or exhibit, none of which captures the intended meaning of 'exposure' in the sentence provided.

4. What is the meaning of the word satiety as used in the last paragraph about The Sleep Workout?

• A. A state of tiredness.
• B. A state of being satisfied.
• C. A state of being overloaded.
• D. A state of confusion.

Correct answer: B

Rationale: Satiety refers to a state of being satisfied, particularly in terms of appetite. In the context of the excerpt provided, it explains that individuals who lack adequate sleep may experience lowered levels of leptin, a hormone that controls appetite. As a result, even after meeting their caloric needs, they may still crave carbohydrates, indicating a lack of satisfaction or satiety. This can lead to obesity and disrupt healthy eating habits. Therefore, choice B, 'A state of being satisfied,' is the correct answer. Choices A, C, and D are incorrect as they do not accurately reflect the meaning of satiety in the context of appetite regulation and sleep's impact on food cravings.

5. Why does the author mention 'impact craters' in line 16?

• A. To explain the corrosive effects of atmospheric weathering
• B. To explain why the Moon has no plant life because of meteorites
• C. To show the result of the Moon not having an atmosphere
• D. To show the result of the Moon not having active tectonic or volcanic activity

Correct answer: C

Rationale: The mention of impact craters in the text is to highlight the consequence of the Moon lacking an atmosphere. The absence of an atmosphere on the Moon leaves it vulnerable to meteorite impacts, resulting in the multitude of impact craters on its surface. Choice A is incorrect because the mention of impact craters is not related to atmospheric weathering but rather to the lack of an atmosphere. Choice B is incorrect as it misinterprets the reason for the absence of plant life on the Moon. Choice D is incorrect as the text explicitly states that the Moon lacks tectonic or volcanic activity, which is not the focus of the mention of impact craters.

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