The functions of an antagonist imply that:
A) the drug has a poor binding affinity for the receptor.
B) the drug will prevent a neurotransmitter from activating a receptor.
C) the drug will produce greater neurotransmitter release.
D) the neurotransmitter has a poor binding affinity for the receptor.

Question

Quizplus · Accepted Answer

The functions of an antagonist imply that the drug will prevent a neurotransmitter from activating a receptor. This is done by binding to the receptor site without activating it, thereby blocking the neurotransmitter from binding and causing its effects. This does not necessarily mean that the drug has poor binding affinity or will produce greater neurotransmitter release. The neurotransmitter may have good binding affinity, but the antagonist drug will still prevent it from producing its effects.

The Functions of an Antagonist Imply That