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 meaning of the word conform as used in the first paragraph?

A. Authorize
B. Fit in
C. Hand over
D. Bewilder

Correct answer: B

Rationale: In this context, "conform" means to fit in with societal norms or standards, particularly those related to beauty. The passage describes how individuals may compromise their health to meet these cultural ideals, indicating that conformity relates to adhering to social expectations of beauty, making option B the correct interpretation.

3. Identify the overall tone of the essay about Sunny-Side Up.

A. Confused.
B. Confident.
C. Disheartened.
D. Disapproving.

Correct answer: B

Rationale: The overall tone of the essay is confident, as the author articulates the positive effects of sunlight and presents a well-supported argument. The assertive language used throughout reflects a strong belief in the benefits of sunlight, making B the correct answer.

4. What is a solution to insomnia?

A. Developing good sleep habits and using herbs and spices.
B. Avoiding physical activity.
C. Staying awake for longer periods.
D. Eating large meals before bed.

Correct answer: A

Rationale: The correct answer is A: Developing good sleep habits and using herbs and spices. The passage highlights that sleep hygiene, which involves developing good sleep habits and non-pharmacological therapies like herbs and spices, are solutions to insomnia. These methods aim to promote better sleep quality. Choices B, C, and D are incorrect. Avoiding physical activity, staying awake for longer periods, and eating large meals before bed can actually worsen insomnia symptoms and disrupt sleep patterns.