if a theory is obsolete what is true of it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 If a theory is obsolete, what is true of it?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B. Outdated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Rationale: The correct answer is B: 'Outdated.' When something is described as 'obsolete,' it means that it is outdated or no longer in use. Therefore, an obsolete theory is no longer current or relevant.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D are incorrect because an obsolete theory is not considered up to date, innovative, or necessarily scientific; it is outdated and no longer relevant in its field.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. He tried to remember the names of all the people who were there that night.

A. that
B. who
C. which
D. whom

Correct answer: B

Rationale: In this context, 'who' is the correct relative pronoun to refer to people. 'That' is used for things, 'which' is used for animals or things, and 'whom' is an object pronoun, not needed in this sentence. Therefore, 'who' is the most appropriate choice.

3. Select the word that means 'an undesired problem that is the result of some other event.'

A. Complication
B. Complement
C. Procedures
D. Implemented

Correct answer: A

Rationale: The correct answer is 'Complication.' A complication refers to a secondary issue or difficulty that arises unexpectedly due to another event. It represents an undesired outcome. Choice 'B: Complement' is incorrect as it means something that enhances or completes, not an undesired problem. Choice 'C: Procedures' is incorrect as it refers to methods or steps, not an undesired problem. Choice 'D: Implemented' is incorrect as it means carried out, not an undesired problem.

4. What is the process of digestion?

A. Production of enzymes
B. The mechanical and chemical breakdown of food
C. Absorption of nutrients in the blood
D. Movement of enzymes

Correct answer: B

Rationale: The correct answer is B: The mechanical and chemical breakdown of food. Digestion involves breaking down food mechanically and chemically into smaller components for absorption by the body. This process occurs in the digestive system, preparing nutrients for absorption in the intestines. Choices A, C, and D are incorrect because digestion is not solely about the production of enzymes, absorption of nutrients in the blood, or movement of enzymes; it primarily involves breaking down food for nutrient absorption.

5. I will call you when I _____ back from visiting my sister.

A. get
B. will get
C. return
D. came

Correct answer: A

Rationale: The correct answer is 'get' because it appropriately indicates a future action in the sentence. In English, when 'when' is used in future time clauses, the following verb should be in the present simple tense to indicate a future event, making 'get' the correct choice. Choices B, C, and D are incorrect. 'Will get' is redundant after 'when' in this context, 'return' is not the appropriate tense for a future action, and 'came' is in the past tense, which is not suitable for a future event.