select the meaning of the underlined word in the sentence always dilute that medicine before dosing a patient
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HESI A2

HESI A2 Vocabulary 2023

1. Choose the meaning of the word 'dilute' in the following sentence: 'Always dilute that medicine before administering it to a patient.'

Correct answer: A

Rationale: In this context, 'dilute' means to make the medicine less concentrated by adding water or another liquid. It is important to dilute certain medicines to ensure they are safe and effective for a patient's use. Choice B, 'Reduce by half,' is incorrect as diluting does not necessarily mean reducing by half; it means to make less concentrated. Choice C, 'Warm up,' is unrelated to the meaning of dilute. Choice D, 'Decontaminate,' is also incorrect as dilute refers to reducing the concentration of a substance, not removing contaminants.

2. Which verb correctly completes the sentence? After throwing their sleeping bags into the backseat of their car, they ___ more than 400 miles to reach their destination.

Correct answer: C

Rationale: In this sentence, the action of driving more than 400 miles is a past action that already took place after they threw their sleeping bags into the backseat. 'Drove' is the correct past tense form of the verb to match this past action. Choice A, 'Driving,' is in the present participle form and does not correctly indicate the completion of the action in the past. Choice B, 'Having driven,' is in the present perfect form and does not fit the sequence of events in the sentence. Choice D, 'Had drove,' is incorrect due to the incorrect use of 'had' with the past form of 'drive.' Therefore, the most appropriate choice is 'Drove.'

3. If they _____ that the weather was going to be so bad, they wouldn't have gone to the beach.

Correct answer: B

Rationale: The correct answer is 'B: had known.' In this conditional sentence, the past perfect tense is required to indicate that knowing about the weather should have happened before going to the beach. 'Knew' (choice A and C) is in the simple past tense, which doesn't convey the sequence of events accurately. 'Could have known' (choice D) is incorrect as it implies a possibility of knowing in the past, but it doesn't fit the context of the sentence where the emphasis is on prior knowledge before going to the beach.

4. Which sentence is grammatically correct?

Correct answer: B

Rationale: The sentence 'Somebody left his or her jacket on the train.' is grammatically correct and respects gender neutrality. 'Somebody' is singular, so the pronoun 'their' in choice A is incorrect. Choice C changes the subject from 'somebody' to 'his,' making it grammatically incorrect. Choice D is grammatically correct, but it is less concise and more awkward than choice B, which smoothly combines 'his' and 'her' for gender-neutral language.

5. What does bifurcate mean?

Correct answer: C

Rationale: Bifurcate means to divide into two forks or branches. It comes from the Latin word "bi" meaning two and "furca" meaning fork. So, when something bifurcates, it splits into two separate paths or divisions. Choice A, "Fold twice," is incorrect as bifurcate doesn't involve folding. Choice B, "Flower biannually," is unrelated to the meaning of bifurcate. Choice D, "Pierce two openings," is also incorrect as it does not capture the true essence of bifurcate, which is about dividing into two forks or branches.

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