A scientist is designing a new drug that will mimic a particular signal molecule and reduce its activity. It is therefore necessary to produce a molecule that will
A) bind specifically to the receptor molecule, induce a change in shape of the molecule which will ultimately prevent a cellular response.
B) bind specifically to adenylyl cyclase to activate protein kinase A and stimulate the cellular response.
C) bind to the membrane bilayer and cause membrane depolarisation to prevent the response.
D) bind to the membrane receptor and open a ligand-gated channel.
E) bind to phospholipase C and activate the G-protein to prevent a cellular response.

Question

Quizplus · Accepted Answer

The correct choice is A because the goal is to mimic a signal molecule and reduce its activity, which involves binding to the receptor molecule in a way that prevents the usual cellular response, often by inducing a change in the receptor's shape that blocks the signal transduction pathway.

A Scientist Is Designing a New Drug That Will Mimic