A molecule that binds to the particular three-dimensional structure of a receptor site is known as a(n)
A) regulator.
B) ligand.
C) receptor.
D) ion channel.
E) G protein.

Question

Quizplus · Accepted Answer

A ligand is a molecule that specifically binds to a receptor site based on its shape and chemistry. This binding can activate or inhibit the receptor's function. The other choices (regulator, receptor, ion channel, and G protein) are all involved in cellular signaling, but do not specifically refer to the molecule that binds to a receptor site.

A Molecule That Binds to the Particular Three-Dimensional Structure of a Receptor