Quizlet Vocabulary HESI A2

Correct Answer: B

Rationale: The correct answer is B: Purified. Aseptic means free from contamination by harmful bacteria, viruses, or other microorganisms. Purified best describes this term as it implies the removal of contaminants. Choice A (Sterilized) refers to the complete destruction of all microorganisms, not just contamination removal. Choices C (Contaminated) and D (Polluted) are incorrect as they both imply the presence of harmful microorganisms, which is the opposite of aseptic.

Correct Answer: B

Rationale: The correct answer is B: A sum total of many things. 'Aggregate' refers to the combined total or sum of different elements. It represents the whole, not just a part or fraction. Option A is incorrect as it refers to only a portion. Option C is incorrect as it suggests a small part, which is opposite to the meaning of 'aggregate.' Option D is incorrect as it indicates a reduction, which is not the definition of 'aggregate.'

Correct Answer: C

Rationale: The correct answer is C: Etiology. Etiology refers to the cause or origin of a disease, in this case, the flu epidemic of 1918. The question explicitly states that the etiology remains unknown, indicating that the cause of the epidemic is still a mystery. Pathology (A) refers to the study of diseases rather than their cause. Transmission (B) relates to how a disease spreads, not its origin. Mortality rate (D) is a measure of the number of deaths caused by a disease and is not directly related to determining the cause of the epidemic. Therefore, the correct answer is C because it specifically addresses the unknown cause of the flu epidemic.

Correct Answer: A

Rationale: The correct answer is A: Extremely changing. Labile refers to being easily altered or constantly shifting. This is the best fit as it captures the essence of the word. Choice B, suicidal, is unrelated to the meaning of labile. Choice C, rapidly changing, is similar but not as strong as "extremely changing." Choice D, with a high fever, is completely unrelated to the meaning of labile. Thus, A is the correct answer as it aligns most closely with the definition of labile.

Correct Answer: A

Rationale: The correct answer is A: Refrain. To abstain means to voluntarily refrain from doing something, typically due to moral or personal reasons. The word "refrain" perfectly captures this meaning. Option B: Indulge means to allow oneself to enjoy something, which is the opposite of abstaining. Option C: Adhere means to stick to or follow a rule or belief, which is not the same as abstaining. Option D: Eliminate means to completely remove or get rid of something, which is not related to abstaining.