HESI A2 Reading Comprehension V1 2024

Correct Answer: B

Rationale: The correct answer is B because sound waves with a lower pitch have a longer wavelength, which means the waves are farther apart. In sound waves, pitch is determined by the frequency, and lower pitch corresponds to lower frequency and longer wavelength. Therefore, waves that are farther apart have a lower pitch. A: Waves that are closer together have a higher pitch. C: The distance traveled by the waves is not directly related to pitch. D: The distance traveled by the waves does not determine the pitch; it is the wavelength that matters.

Correct Answer: B

Rationale: The correct answer is B because it accurately summarizes the passage by mentioning the role of the cardiovascular system in regulating blood pressure through baroreceptors, chemoreceptors, and the kidneys. The other choices are incorrect because they either focus on specific organs like the heart and kidneys (A), or only mention one aspect of blood pressure regulation (C and D). B provides a comprehensive summary that includes all key elements mentioned in the passage.

Correct Answer: C

Rationale: The correct answer is C: disease-causing substances. In the first paragraph, pathogens are referred to as agents capable of causing disease. The term 'pathogens' specifically encompasses various microorganisms like bacteria, viruses, fungi, and parasites that can infect a host and lead to illnesses. Choice A, diseases, is incorrect as pathogens are the causative agents of diseases. Choice B, vaccines, is incorrect as vaccines are used to prevent diseases caused by pathogens. Choice D, foods, is also incorrect as pathogens are not related to foods but are rather disease-causing agents. Thus, the most appropriate interpretation of 'pathogens' in the context of the paragraph is disease-causing substances.

Correct Answer: A

Rationale: The correct answer is A: call into service. In the context of the second paragraph, 'enlist' means to join or sign up for a particular cause or service. This is evident from the sentence mentioning individuals joining the army. Choice B, write down, is incorrect because 'enlist' doesn't refer to simply writing something. Choice C, send away, is incorrect as it implies the opposite meaning of 'enlist.' Choice D, put across, is also incorrect as it does not capture the idea of joining or signing up as 'enlist' does.

Correct Answer: A

Rationale: The correct answer is A: free of bacteria. In the context of the second paragraph, the word 'sterile' is most likely referring to the cleanliness and lack of bacteria in the environment. This is supported by the fact that the paragraph is discussing medical equipment and the importance of maintaining sterility to prevent infection. Choice B, healthy, is incorrect as 'sterile' does not necessarily mean healthy. Choice C, delicious, is unrelated to the context and does not make sense. Choice D, impotent, is also unrelated and does not fit the context of the paragraph.