Molecules that bind to a receptor and trigger signaling pathways are called
A) antagonists.
B) agonists.
C) IRE-binding proteins.
D) promoters.
E) None of the answers is correct.

Question

Quizplus · Accepted Answer

Agonists are molecules that bind to receptors and activate them, triggering a signaling pathway. Antagonists, in contrast, block receptor activity. IRE-binding proteins and promoters are involved in gene expression regulation rather than receptor signaling.

Molecules That Bind to a Receptor and Trigger Signaling Pathways