what is the meaning of the word overturn in the last paragraph of the passage
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HESI A2

Reading Comprehension HESI A2 Practice Test

1. What is the meaning of the word overturn in the last paragraph of the passage?

Correct answer: B

Rationale: The word "overturn" means to invalidate or negate existing guidelines. In this context, the passage questions whether the findings of the study are substantial enough to change established medical recommendations regarding caffeine intake during pregnancy, making option B the appropriate choice.

2. Solve for x: 3x + 9 = 0.

Correct answer: B

Rationale: To solve the equation 3x + 9 = 0, first, isolate the variable x. Subtract 9 from both sides to get 3x = -9. Then, divide by 3 to solve for x, giving x = -3. Therefore, the correct answer is B. Choice A, x = -3, is the correct solution. Choices C and D are incorrect as they do not satisfy the equation when substituted back into it.

3. Choose the meaning of the word 'coterie' in the following sentence: 'Julia and her coterie are often out at local clubs until the wee hours.'

Correct answer: A

Rationale: In this context, the word 'coterie' refers to a small group of people who share similar interests or activities, typically a close-knit circle of friends. The other choices are incorrect. 'An extended family' refers to relatives beyond the nuclear family, 'an engaged person' is someone committed to be married, and 'a manager or director' are job roles unrelated to the context of the sentence.

4. Which verb form best completes the sentence?

Correct answer: D

Rationale: The correct answer is 'Having.' In the sentence 'I am looking forward to having my birthday party next week,' 'having' is the correct present participle form of the verb 'have' to indicate an anticipated event. Choice A 'Going' is incorrect as it does not match the structure of the sentence. Choice B 'Go' is incorrect as it is the base form of the verb and does not fit grammatically. Choice C 'Have' is incorrect as it is the base form and does not convey the future action in the sentence.

5. Which of the following is true of the Krebs cycle?

Correct answer: B

Rationale: The Krebs cycle, also known as the citric acid cycle, involves a series of redox reactions that occur in the mitochondria. The cycle begins with the oxidation of acetyl CoA, which is derived from the breakdown of sugars produced during glycolysis. These sugars are broken down further in the Krebs cycle to produce ATP and reduce electron carriers such as NADH and FADH2. The cycle does not involve proteins produced during glycolysis. Protons are not passed along a gradient to produce ATP directly in the Krebs cycle; rather, they are used in the electron transport chain to generate ATP. The Krebs cycle is not known as the glycolic acid cycle; glycolysis is the metabolic pathway that produces pyruvate from glucose.

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