what is the best description for the word efficacy in the following sentence the quality safety and efficacy of counterfeit medicines are not known
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Nursing Elites

HESI A2

Vocabulary HESI A2

1. What is the best description for the word efficacy in the following sentence? The quality, safety, and efficacy of counterfeit medicines are not known.

Correct answer: A

Rationale: In the context of the sentence provided, efficacy refers to the ability of counterfeit medicines to produce the intended or desired effect. Efficacy is closely related to effectiveness, which is the correct description in this context. 'Significance' (Choice B), 'Corollary' (Choice C), and 'Conclusion' (Choice D) do not accurately capture the meaning of efficacy in this context.

2. To aspirate fluid, you might use a ___________.

Correct answer: A

Rationale: To aspirate fluid, you would typically use a syringe. A syringe is a device consisting of a tube and a plunger, which allows you to draw fluids such as blood or medication into the tube by pulling back on the plunger. This action is called aspiration, and the syringe is a common tool for this purpose in various medical procedures. Choices B, C, and D are incorrect as they are not typically used for aspiration procedures. A beaker is a glass container used for holding liquids, a test tube is used for holding or mixing small quantities of substances, and a flange is a projecting rim or edge used for strength or for attaching to another object.

3. It seems like the sun _____ on Saturday.

Correct answer: B

Rationale: The correct answer is 'never shone' as the sentence is discussing a past event (Saturday). 'Never shone' is the correct past tense form to describe the sun not shining on a specific day in the past. Choices A, C, and D are incorrect because they do not provide the appropriate past tense form needed in this context. 'Never shines' is present tense, 'rarely shines' implies occasional shining, and 'sometimes shines' suggests occasional shining as well, none of which accurately convey the past event of the sun not shining on Saturday.

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

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.

5. I will call you when I _____ back from visiting my sister.

Correct answer: A

Rationale: The correct answer is 'get' because it appropriately indicates a future action in the sentence. In English, when 'when' is used in future time clauses, the following verb should be in the present simple tense to indicate a future event, making 'get' the correct choice. Choices B, C, and D are incorrect. 'Will get' is redundant after 'when' in this context, 'return' is not the appropriate tense for a future action, and 'came' is in the past tense, which is not suitable for a future event.

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