HESI A2
HESI A2 Reading Comprehension Practice Test
1. What is implied about the rainforest's role in global climate?
- A. The rainforest has little impact on the climate.
- B. The rainforest plays a crucial role in regulating the climate.
- C. The rainforest is mainly important for biodiversity.
- D. The rainforest's destruction has no global consequences.
Correct answer: B
Rationale: The rainforest plays a crucial role in regulating the global climate by absorbing carbon dioxide. The extract highlights the fact that trees take in carbon dioxide and give off oxygen. When trees are cut down, the amount of carbon dioxide increases, contributing to global warming. This emphasizes the significant impact of rainforests on the climate. Choice A is incorrect as the extract clearly states the importance of rainforests in absorbing carbon dioxide. Choice C, while true, is not directly related to the implied role of rainforests in regulating the climate. Choice D is also incorrect as the destruction of rainforests does have global consequences, such as contributing to global warming.
2. The main idea of the passage is ___________.
- A. The CDC keeps an eye out for new potentially threatening health issues
- B. Children require several more hours of sleep per night than adults do
- C. More people are staying up at night to surf the Internet or watch television
- D. Lack of adequate sleep is becoming a major national health problem
Correct answer: D
Rationale: The main idea of the passage is that lack of adequate sleep is becoming a major national health problem.
3. What is implied by this paragraph about food and drink?
- A. We should eat and drink in reasonable quantities.
- B. Alcohol should be banned.
- C. People should eat in large quantities.
- D. We need stronger laws to control drunk drivers.
Correct answer: A
Rationale: The paragraph emphasizes that while food and drink are necessary and desirable, their abuse can lead to serious physical and mental problems. It highlights the negative consequences of overeating and alcohol abuse, such as strain on the heart, diabetes, and other health issues. The text suggests the importance of moderation in consumption to prevent health problems. Choices B, C, and D are incorrect because the paragraph does not call for a ban on alcohol, promote eating in large quantities, or specifically discuss the need for stronger laws to control drunk drivers.
4. 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.
5. Which of the following is not mentioned as a detail in the passage about Sickle-Cell Anemia?
- A. People of South American or African descent may be prone to sickle-cell anemia.
- B. Symptoms of sickle-cell anemia may include sudden occurrences of extreme abdominal and back pain.
- C. The red blood cells of sickle-cell patients are unusually shaped, forming crescent or sickle shapes.
- D. Vitamin and mineral deficiencies may result in some anemia.
Correct answer: D
Rationale: The correct answer is D because the passage does not mention anything about vitamin and mineral deficiencies in relation to sickle-cell anemia. Choice A is incorrect as the passage specifies that sickle-cell anemia is more common among people of South American or African descent. Choice B is correct as the passage states that symptoms of sickle-cell anemia can include sudden occurrences of extreme abdominal and back pain. Choice C is correct as the passage describes that the red blood cells of sickle-cell patients are unusually shaped, forming crescent or sickle shapes. The passage does not discuss any relationship between vitamin and mineral deficiencies and sickle-cell anemia, making choice D the correct option.
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