Section 1
Signaling Molecules and Cellular Receptors
Book
Version 32
By Boundless
By Boundless
Boundless Biology
Biology
by Boundless
4 concepts
![Thumbnail](../../../../../../figures.boundless-cdn.com/18865/square/figure-09-01-00.jpeg)
Signaling Molecules and Cellular Receptors
Cellular communication ensures regulation of biological processes within various environments from single-celled to multicellular organisms.
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Forms of Signaling
The major types of signaling mechanisms that occur in multicellular organisms are paracrine, endocrine, autocrine, and direct signaling.
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Types of Receptors
Receptors, either intracellular or cell-surface, bind to specific ligands, which activate numerous cellular processes.
![Thumbnail](../../../../../../figures.boundless-cdn.com/18873/square/figure-09-01-08.jpeg)
Signaling Molecules
Signaling molecules are necessary for the coordination of cellular responses by serving as ligands and binding to cell receptors.