A molecule functioning as an antagonist binds to a(n)
A) natural ligand.
B) artificial ligand, such as a drug.
C) adenosine molecule.
D) polar signal.
E) receptor protein.

Question

Quizplus · Accepted Answer

Antagonists are molecules that bind to receptor proteins and prevent the binding of natural or artificial ligands, which activate the receptor. Therefore, the best choice is E, receptor protein.

A Molecule Functioning as an Antagonist Binds to A(n)