Communication between cells occurs when chemical messengers from one cell bind to ________ on another cell.

A) channel proteins
B) receptor proteins
C) marker molecules
D) second messengers
E) integrins

Chemical Messengers

Substances, often hormones or neurotransmitters, that transmit signals from one cell to another.

Receptor Proteins

Proteins located on the surface of or within cells that bind to specific molecules like hormones or neurotransmitters, triggering a specific cellular response.