MOOC Advertisement

Learn More:
Get An Introduction to Reproduction

Learn more about the the science of reproduction. Dr. Teresa Woodruff, creator of Repropedia, is offering a free online course exploring the world of reproduction.

Get Started!


A receptor is a protein molecule on the surface or interior of a cell that allows it to recognize specific molecules like hormones, reversibly bind to them, and respond with a change in the cell or in the chemicals it produces. The receptors are involved in the first step of a cascade also involving transducers and effectors that allow cells to capture, translate, and respond to chemical signals from within the body or from the environment.