HESI A2
HESI A2 Vocabulary 2023
1. If tubes distend, they ___________.
- A. flex
- B. stretch
- C. solidify
- D. collapse
Correct answer: B
Rationale: When tubes distend, they expand or become enlarged, which typically results in stretching rather than flexing, solidifying, or collapsing. Distending tubes imply an increase in size or volume, indicating a stretching or expansion effect. Therefore, the correct answer is 'stretch.' Choice A, 'flex,' is incorrect as flexing refers to bending or curling, not expanding. Choice C, 'solidify,' is incorrect as solidifying refers to becoming solid, which is not related to the expansion of tubes. Choice D, 'collapse,' is incorrect as collapsing refers to falling in or giving way, which is the opposite effect of distending.
2. What is Diffusion?
- A. Movement of materials from low concentration to high concentration
- B. Movement of materials from high concentration to low concentration
- C. Absorption of nutrients
- D. Breaking of materials
Correct answer: B
Rationale: Diffusion is the process where substances move from an area of high concentration to an area of low concentration. This movement occurs due to the random motion of particles and continues until equilibrium is reached. Choice A is incorrect because diffusion occurs down the concentration gradient, from high to low concentration, not from low to high concentration. Choice C is incorrect as it refers to the uptake of substances by cells, not the general process of diffusion. Choice D is incorrect as it does not accurately describe the process of diffusion; diffusion involves the movement of substances, not the breaking of materials.
3. What is the meaning of the word 'maladroit' in the sentence: 'Those who are maladroit should not become surgeons'?
- A. Clumsy
- B. Romantic
- C. Untrained
- D. Self-conscious
Correct answer: A
Rationale: The correct answer is A: 'Clumsy.' In this context, 'maladroit' means lacking skill or coordination, especially in tasks requiring dexterity and precision. The statement suggests that individuals who are clumsy or awkward should avoid pursuing a career as surgeons. Choice B, 'Romantic,' is incorrect as it does not align with the context provided. Choice C, 'Untrained,' does not capture the essence of clumsiness implied by 'maladroit.' Choice D, 'Self-conscious,' is also incorrect as it does not reflect the intended meaning of lacking skill or coordination.
4. The quality, safety, and efficacy of the new medicines are not known. What does efficacy mean?
- A. Cost
- B. Effectiveness
- C. Quality
- D. Usage
Correct answer: B
Rationale: Efficacy refers to how effective something is. In this context, it refers to the effectiveness of the new medicines. 'Cost' (Choice A) is incorrect as it relates to the price of something, not its effectiveness. 'Quality' (Choice C) is incorrect as it refers to the standard or degree of excellence. 'Usage' (Choice D) is incorrect as it refers to how something is used, not its effectiveness.
5. Which sentence correctly uses a semicolon?
- A. I have a big test tomorrow; I can't go out tonight.
- B. She likes apples; oranges are her favorite.
- C. I went to the store; and I bought some milk.
- D. I like apples, but oranges are better.
Correct answer: B
Rationale: The sentence 'She likes apples; oranges are her favorite.' correctly uses a semicolon to connect two related independent clauses. The semicolon is used to separate two closely related ideas in a way that is stronger than a comma but not as final as a period. Choice A is incorrect because the conjunction 'but' is missing before 'I can't go out tonight.' Choice C is incorrect as the conjunction 'and' after the semicolon is unnecessary and disrupts the flow of the sentence. Choice D is incorrect because the semicolon is incorrectly placed before 'oranges are better,' where a comma or period would be more appropriate.
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