Affinity refers to a drug's ____, while efficacy refers to a drug's ____.
A) concentration; effectiveness
B) function; structure
C) strength of binding to the receptor; tendency to activate the receptor
D) tendency to activate the receptor; strength of binding to the receptor

Question

Quizplus · Accepted Answer

Affinity refers to the strength of binding between a drug molecule and the receptor it targets. Efficacy, on the other hand, refers to a drug's ability to produce a biological response once it has bound to the receptor. So, the correct answer is C, as option C correctly describes the difference between affinity and efficacy.

Affinity Refers to a Drug's ____, While Efficacy Refers to a Drug's