what is diffusion
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Nursing Elites

HESI A2

Quizlet Vocabulary HESI A2

1. What is Diffusion?

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.

2. The student observed the tricky procedure with a certain amount of trepidation. What does trepidation mean?

Correct answer: B

Rationale: The correct answer is B: Misgivings. Trepidation means a feeling of fear or apprehension. In this context, the student observed the procedure with a certain amount of trepidation, indicating that they were feeling uneasy or fearful. Choices A, C, and D are incorrect. Confidence (choice A) is the opposite of trepidation, as it denotes a feeling of self-assurance. Fear (choice C) is the closest synonym to trepidation, making it an attractive distractor, but it is not the correct answer. Doubt (choice D) is different from trepidation, as doubt refers to a feeling of uncertainty or lack of conviction, not necessarily fear or apprehension.

3. Select the word that means 'about to happen.'

Correct answer: D

Rationale: The correct answer is 'impending,' which means something that is about to happen. Choices A, B, and C do not have the same meaning. 'Depending' refers to relying on something, 'offending' means causing anger or resentment, and 'suspending' means temporarily stopping or delaying something.

4. Select the meaning of the word 'tenuous' in the sentence: 'Patients in this wing often have a tenuous hold on reality.'

Correct answer: D

Rationale: In this context, the word 'tenuous' is used to describe a weak or delicate hold on reality. 'Fragile' is the correct choice as it conveys the idea of something being easily broken or damaged, which aligns with the meaning of 'tenuous' in the sentence. Choice A, 'Judicious,' means having good judgment, which is unrelated to the context. Choice B, 'Deleted,' means removed or erased, which is not synonymous with 'tenuous.' Choice C, 'Frantic,' means panicked or desperate, which does not capture the delicate or weak nature implied by 'tenuous.'

5. A symptom that is exacerbated is ______

Correct answer: B

Rationale: The correct answer is B, 'Made worse.' When a symptom is exacerbated, it means that it is becoming more severe or intense. Choices A, C, and D are incorrect. A is the opposite of exacerbated as improving means getting better, C means remaining unchanged, and D means to make something better or improve, which is the opposite of exacerbate.

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