Nursing Elites

1. What is the meaning of the word 'enlist' as it is used in the second paragraph?

• A. call into service
• B. write down
• C. send away
• D. put across

Correct answer: A

Rationale: In the context of the immune system, 'enlist' means to call into service. Immune cells recruit other cells to fight infection by producing chemicals that regulate their growth, behavior, and direct new recruits to trouble spots. This process is essential for the immune system's defense mechanism. The other choices are incorrect: 'write down' and 'put across' do not capture the action of mobilizing immune cells, and 'send away' is opposite in meaning to what is happening in the immune response.

2. What is implied about Benjamin Franklin in the passage on Daylight Savings Time?

• A. Benjamin Franklin opposed the idea of Daylight Savings Time.
• B. Benjamin Franklin was the first to implement Daylight Savings Time.
• C. Benjamin Franklin proposed the idea of Daylight Savings Time.
• D. Benjamin Franklin had no role in Daylight Savings Time.

Correct answer: C

Rationale: The correct answer is C. The passage states that Benjamin Franklin first suggested the introduction of Daylight Savings Time in the 18th century. However, the first serious proposal came in 1907 from William Willet. Franklin's idea was not implemented during his lifetime, but he did propose the concept. Therefore, choices A, B, and D are incorrect. Choice A is incorrect because Franklin did not oppose the idea. Choice B is incorrect because he was not the first to implement it. Choice D is incorrect because he did have a role in proposing the idea.

3. Choose the best summary of the passage about Sunny-Side Up.

• A. Light-skinned people need a maximum of 15 minutes a day in direct sunlight to achieve the benefits of the sun’s rays.
• B. Spending too much time indoors can wreak havoc with your circadian rhythms, leach vitamin D from your bones, and damage your immune system.
• C. Although negative effects of sunlight are well known, people should be aware that some sunlight is necessary and beneficial.
• D. You can avoid direct sunlight but still reap the benefits of a day in the sun by using sunscreen or tinted glass.

Correct answer: C

Rationale: The best summary captures the essence of the passage, which acknowledges the well-known negative effects of sunlight while also emphasizing the necessity and benefits of sunlight exposure. C accurately reflects this balanced view, making it the most appropriate choice.

4. What is the meaning of the word 'pathogens' as it is used in the first paragraph?

• A. diseases
• B. vaccines
• C. disease-causing substances
• D. foods

Correct answer: C

Rationale: In the context provided, 'pathogens' refers to disease-causing substances such as bacteria and viruses. These microorganisms can contaminate food and lead to foodborne illnesses. Choice A ('diseases') is incorrect as pathogens themselves cause diseases but are not diseases. Choice B ('vaccines') is incorrect as vaccines are used to prevent diseases caused by pathogens. Choice D ('foods') is incorrect as pathogens are not foods, but rather contaminants that can be found in food.

5. What statement about jetlag can be inferred from the passage on Daylight Savings Time?

• A. Jetlag is caused by flying at high speeds.
• B. Jetlag is caused by moving between time zones.
• C. Jetlag is unrelated to time zone changes.
• D. Jetlag is a myth.

Correct answer: B

Rationale: The correct answer is B: 'Jetlag is caused by moving between time zones.' The passage explains that jetlag occurs when moving suddenly from one time zone to another, such as when flying from Asia to North America. This disrupts the body's internal clock, leading to symptoms like tiredness and sleep disturbances. Choice A is incorrect as jetlag is not attributed to high-speed travel but to time zone changes. Choice C is incorrect as the passage clearly links jetlag to changes in time zones. Choice D is incorrect as jetlag is a real phenomenon experienced by individuals who travel across different time zones.

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