HESI A2
HESI A2 Reading Comprehension 2024
1. The term exacerbate, as used in the last paragraph, can best be defined as ___________.
- A. To soothe
- B. To intensify
- C. To adapt
- D. To disclose
Correct answer: B
Rationale: "Exacerbate" means to intensify or worsen, especially in the context of medical conditions worsening heat exhaustion.
2. A newborn weighs 3,459 grams. There are 453.59 grams per pound. What is the infant's weight in pounds and ounces?
- A. 7 lbs 10 oz
- B. 10 lbs 7 oz
- C. 13 lbs 3 oz
- D. 3 lbs 13 oz
Correct answer: A
Rationale: To find the weight in pounds, divide the weight in grams by the conversion factor (453.59 grams per pound). 3,459 grams รท 453.59 = approximately 7 lbs 10 oz. Therefore, choice A (7 lbs 10 oz) is the correct answer. Choice B (10 lbs 7 oz) and Choice C (13 lbs 3 oz) are incorrect as they do not correspond to the correct conversion. Choice D (3 lbs 13 oz) is incorrect as it does not account for the additional pounds derived from dividing 3,459 grams by the conversion factor.
3. Which of the following is a conclusion that a reader can draw from this passage?
- A. Humans are not the only mammals that exhibit symptoms when infected by Borrelia burgdorferi.
- B. The life cycle of an uninfected tick includes a dormant phase before the nymph stage, which is not excluded.
- C. Unless a tick feeds on an infected mouse or squirrel, it will not spread Lyme disease.
- D. The combination of fever, headache, and joint pain is not a definite indication of Lyme disease.
Correct answer: C
Rationale: The correct answer is C. The passage clearly states that for Lyme disease to spread, a tick must feed on an infected host, such as a mouse or squirrel. This conclusion can be drawn from the information provided in the extract. Choice A is incorrect because the passage does not specify that humans are the only mammals that exhibit symptoms when infected by Borrelia burgdorferi. Choice B is incorrect as the passage mentions that the life cycle of an uninfected tick includes a dormant phase before the nymph stage, without excluding it. Choice D is incorrect because the passage does not state that the combination of fever, headache, and joint pain is a definitive sign of Lyme disease.
4. What is the typical oxidation state of oxygen in most compounds?
- A. -1
- B. -2
- C. 0
- D. -3
Correct answer: B
Rationale: The correct answer is B: "-2". Oxygen usually exhibits an oxidation state of -2 in most compounds. This is due to oxygen's high electronegativity, which causes it to attract electrons, leading to the gain of two electrons in chemical reactions. Choice A (-1) is incorrect because oxygen rarely has an oxidation state of -1 in compounds. Choice C (0) is incorrect as oxygen does not usually have an oxidation state of zero in compounds. Choice D (-3) is incorrect as oxygen does not commonly have an oxidation state of -3 in compounds.
5. What charge do Group IIIA elements have?
- A. +1
- B. +2
- C. +3
- D. 0
Correct answer: C
Rationale: Group IIIA elements, also known as Group 13 elements, have a common oxidation state of +3. This is because they have three valence electrons and tend to lose these electrons to achieve a stable electron configuration, resulting in a +3 charge. Choice A (+1) and Choice B (+2) are incorrect because Group IIIA elements typically lose all three valence electrons to attain a stable configuration, leading to a +3 charge. Choice D (0) is incorrect as these elements do not gain electrons but rather lose them, resulting in a positive charge.
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