A drug blocks vesicle transporters This drug would be consid

A drug blocks vesicle transporters. This drug would be considered a/an:

A. antagonist

B. promotor

C. villain

D. agonist

Solution

The right answer is option D. Agonist

Agonist refers to a chemical that binds to a receptor, activates it and initiates a biological response. In the given example,the drug which is a chemical compound binds to the receptors of the vesicle transporters and blocks them .Hence it is a valid option.

The other options antagonist refers to a person who oposses something, promoter refers to a segment of DNA which initiates transcription and villain refers to a character or person with negative personality. Thus these three options are not related to the question given and are eliminated