if a theory is obsolete what is true of it

HESI A2

Vocabulary HESI A2 Practice Test

1. If a theory is obsolete, what is true of it?

A. Up to date
B. Outdated
C. Innovative
D. Scientific

Correct answer: B

Rationale: The correct answer is B: 'Outdated.' When something is described as 'obsolete,' it means that it is outdated or no longer in use. Therefore, an obsolete theory is no longer current or relevant. Choices A, C, and D are incorrect because an obsolete theory is not considered up to date, innovative, or necessarily scientific; it is outdated and no longer relevant in its field.

2. What is the best description for the word efficacy in the following sentence? The quality, safety, and efficacy of counterfeit medicines are not known.

A. Effectiveness
B. Significance
C. Corollary
D. Conclusion

Correct answer: A

Rationale: In the context of the sentence provided, efficacy refers to the ability of counterfeit medicines to produce the intended or desired effect. Efficacy is closely related to effectiveness, which is the correct description in this context. 'Significance' (Choice B), 'Corollary' (Choice C), and 'Conclusion' (Choice D) do not accurately capture the meaning of efficacy in this context.

3. What are the soft spots on the head of a newborn called?

A. Fistula
B. Fontanel
C. Follicle
D. Fissure

Correct answer: B

Rationale: The correct answer is 'Fontanel.' Fontanels are the soft spots on a newborn's head where the skull bones have not yet fused together, allowing for some flexibility during birth and rapid brain growth in early infancy. 'Fistula' is a medical term for an abnormal connection between two body parts. 'Follicle' refers to a small cavity in the skin from which hair grows. 'Fissure' is a narrow opening or crack, not related to the soft spots on a newborn's head.

4. Which word means to suggest, to hint, to express indirectly?

A. Imply
B. Infer
C. Opinion
D. Latter

Correct answer: A

Rationale: 'Imply' means to suggest or indicate something indirectly. In this context, 'Infer' (choice B) is incorrect as it means to deduce or conclude information based on evidence and reasoning, not to suggest. 'Opinion' (choice C) refers to a personal view or judgment, not the act of suggesting indirectly. 'Latter' (choice D) means the second of two things mentioned.

5. Which sentence correctly uses a semicolon?

A. I have a big test tomorrow; I can't go out tonight.
B. She likes apples; oranges are her favorite.
C. I went to the store; and I bought some milk.
D. I like apples, but oranges are better.

Correct answer: B

Rationale: The sentence 'She likes apples; oranges are her favorite.' correctly uses a semicolon to connect two related independent clauses. The semicolon is used to separate two closely related ideas in a way that is stronger than a comma but not as final as a period. Choice A is incorrect because the conjunction 'but' is missing before 'I can't go out tonight.' Choice C is incorrect as the conjunction 'and' after the semicolon is unnecessary and disrupts the flow of the sentence. Choice D is incorrect because the semicolon is incorrectly placed before 'oranges are better,' where a comma or period would be more appropriate.