A molecule that binds specifically to a receptor is called a ______________.

A) ligand
B) clathrin
C) endosome
D) macrophage
E) low-density lipoprotein

Ligand

A molecule that binds to a specific site in a receptor or other protein.

Receptor

(1) In cell biology, a molecule on the surface of a

Clathrin

A protein that plays a critical role in the formation of coated vesicles, involved in the transport of molecules within cells.