what is the main idea of the passage about microbes

HESI A2

Reading Comprehension HESI A2 Practice Test

1. What is the main idea of the passage about microbes?

A. Recent discoveries are revealing the critical role of microorganisms in maintaining a properly functioning immune system.
B. The human body is host to a staggering number of microorganisms.
C. Bacteriotherapy reintroduces healthy bacteria into a colon lacking the capability to defend against pathogenic agents.
D. Early research has shown remarkable discoveries in the possibilities of bacteriotherapy.

Correct answer: A

Rationale: The main idea of the passage is that recent discoveries are shedding light on the pivotal role of microorganisms in maintaining a properly functioning immune system. The passage discusses how the human body hosts a wide array of microorganisms, emphasizes the importance of these bacteria in the development of the immune system, and explores the potential applications of bacteriotherapy. Choice A is the correct answer because it accurately reflects the central theme discussed in the passage. Choices B, C, and D are incorrect because they focus on specific details or applications mentioned in the passage, rather than capturing the overarching theme of the critical role of microorganisms in immune system function.

2. What is the author’s primary purpose in writing this essay about microbes?

A. To persuade
B. To inform
C. To entertain
D. To analyze

Correct answer: B

Rationale: The author's primary purpose is to inform readers about the crucial role of microorganisms in the immune system. The essay focuses on presenting factual information and recent discoveries regarding the impact of microbes on human health. The author aims to educate the readers on the significance of microbes in human health rather than persuade them of a particular viewpoint (Choice A), entertain them with light-hearted content (Choice C), or analyze in-depth data and findings (Choice D). The essay's emphasis on informing readers about the role of microorganisms in the immune system makes 'To inform' the correct choice.

3. Which might be a good title for the passage about Barefoot Running?

A. Everyone Should Run Barefoot.
B. How to Prevent Running Injuries.
C. Modern Road Surfaces Versus Barefoot Running.
D. The Debate over Barefoot Running.

Correct answer: D

Rationale: The title 'The Debate over Barefoot Running' captures the main discussion in the passage.

4. What is the meaning of the word delicate as used in the first paragraph?

A. Subtle
B. Fragile
C. Refined
D. Intricate

Correct answer: D

Rationale: In the context of microsurgery, the word 'delicate' refers to the intricate, precise, and fine nature of surgeries performed using microscopy. These surgeries require intricate attention to detail and precision due to the small and delicate structures involved, making 'intricate' the most appropriate synonym. 'Subtle' implies understated or not obvious, 'fragile' suggests easily broken or damaged, and 'refined' refers to something developed or improved over time, none of which fully capture the detailed and precise nature of microsurgery. Therefore, 'intricate' is the correct answer.

5. The author seems to?

A. Oppose drinking alcohol
B. Favor a strict diet
C. Oppose regulation of personal habits
D. Advocate moderation and balance

Correct answer: D

Rationale: The passage does not explicitly state the author's stance on alcohol consumption or dieting. However, the description of playing Bridge emphasizes qualities like time, effort, and attention to become proficient. This suggests that the author likely favors moderation and balance in one's approach to activities, rather than extremes like excessive drinking or strict dieting. Choice A is incorrect because the author does not express opposition to drinking alcohol. Choice B is incorrect as there is no indication of the author favoring a strict diet. Choice C is incorrect as there is no direct mention of opposing regulation of personal habits in the passage.