this medication works by inhibiting the action of a certain enzyme what does inhibiting mean

HESI A2

Vocabulary for HESI A2

1. This medication works by inhibiting the action of a certain enzyme. What does inhibiting mean?

A. Blocking
B. Hindering
C. Energizing
D. Blocking improvement

Correct answer: B

Rationale: The correct answer is 'B: Hindering.' Inhibiting means to hinder or slow down a process. Choices A and D are similar and imply a complete stop of the process rather than just slowing it down. Choice C, 'Energizing,' is the opposite of inhibiting, as it means to provide energy or stimulate rather than hinder.

2. What does 'Contour' mean?

A. Flat area
B. Shape or outline of something
C. Volume of a structure
D. Height of a structure

Correct answer: B

Rationale: The term 'Contour' specifically refers to the shape or outline of something. In art and geography, contours are used to represent the outline or shape of an object or landform, making choice B the correct definition. Choice A, 'Flat area,' is incorrect as it does not capture the essence of contour which is about the shape or outline. Choice C, 'Volume of a structure,' is unrelated to the concept of contour. Choice D, 'Height of a structure,' is also incorrect as contour is more about the shape and not the height of an object.

3. Choose the meaning of the word "laceration" in the following sentence: "The accident left her with a painful laceration."

A. Gait
B. Cut
C. Headache
D. Welt

Correct answer: B

Rationale: In the sentence, "laceration" is referring to a deep cut or tear in the skin. It is often associated with injuries that are caused by sharp objects or trauma. Therefore, the most appropriate meaning of "laceration" in this context is a cut.

4. What is another word for toxin?

A. Impurity
B. Element
C. Remedy
D. Poison

Correct answer: D

Rationale: The correct answer is D, Poison. A toxin is a harmful substance that can cause illness or death, and poison is a synonym commonly used to refer to such substances. Choices A, B, and C are incorrect because impurity refers to something being dirty or unclean, an element is a pure substance that cannot be broken down further, and a remedy is a solution or treatment for a problem, not a harmful substance like a toxin.

5. Which of the following is the plural form of the noun 'stimulus'?

A. Stimulus
B. Stimuli
C. Stimulis
D. Stimula

Correct answer: B

Rationale: The correct answer is 'Stimuli.' When forming the plural of 'stimulus,' the correct form is 'stimuli.' Choice A, 'Stimulus,' is the singular form, not the plural. Choice C, 'Stimulis,' is an incorrect spelling. Choice D, 'Stimula,' is also an incorrect form for the plural of 'stimulus.' Therefore, 'Stimuli' is the only correct plural form.