HESI A2
HESI A2 Vocabulary 2024
1. What is the best description for the abbreviation CDC?
- A. An online social network
- B. A test for postgraduate students
- C. A well-known pharmaceutical
- D. A public health association
Correct answer: D
Rationale: The abbreviation CDC stands for the Centers for Disease Control and Prevention, which is a well-known public health association in the United States. The CDC is a federal agency under the Department of Health and Human Services, responsible for protecting public health and safety by controlling and preventing disease, injury, and disability. Choices A, B, and C are incorrect as they do not accurately describe what the CDC is known for; it is not an online social network, a test for postgraduate students, or a pharmaceutical company.
2. What does 'expand' mean?
- A. To decrease in size
- B. To increase in size or amount
- C. To spread out
- D. To eliminate
Correct answer: B
Rationale: The correct answer is B. 'Expand' means to increase in size or amount. Choice A, 'To decrease in size,' is the opposite of what 'expand' means. Choice C, 'To spread out,' is related to expanding but does not precisely define the term. Choice D, 'To eliminate,' is not synonymous with the term 'expand.'
3. What is a Nutrient?
- A. A chemical compound
- B. A substance that provides nourishment
- C. A non-essential mineral
- D. An essential vitamin
Correct answer: B
Rationale: A nutrient is a substance that provides nourishment to the body, such as carbohydrates, proteins, fats, vitamins, and minerals. Choice A has been improved to 'A chemical compound' to be more specific. Choice A is incorrect as it is too general and does not specifically describe the role of a nutrient. Choice C is incorrect as it focuses on minerals without specifying that all minerals are nutrients. Choice D is also incorrect as it solely emphasizes vitamins, which are just one type of nutrient.
4. What is the best description for the term Aseptic?
- A. Sterilized
- B. Purified
- C. Contaminated
- D. Polluted
Correct answer: B
Rationale: The correct answer is B: 'Purified.' Aseptic means free from contamination or sterile. While 'Sterilized' (choice A) is related to the elimination of all microorganisms, aseptic goes beyond sterilization to ensure freedom from contamination in a broader sense. 'Contaminated' (choice C) and 'Polluted' (choice D) are incorrect as they mean the opposite of aseptic, implying the presence of unwanted or harmful substances.
5. The rain will CEASE at sundown.
- A. Decrease
- B. Begin
- C. Stop
- D. Increase
Correct answer: C
Rationale: The word 'cease' means to stop or come to an end. In the given sentence, it is implied that the rain will stop at sundown, not decrease, begin, or increase. Therefore, the correct option is 'Stop.' 'Decrease' means to become smaller or less, which doesn't fit the context. 'Begin' means to start, which is the opposite of what is stated. 'Increase' means to become or make greater in amount, which is also contrary to the statement.
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