Question

How do signal transduction pathways occur?

Answer 1

The signal transduction involves the binding of extracellular signaling molecules.

Explanation:

The signal transduction involves the binding of extracellular signaling molecules. It is also called as the ligands. The receptors trigger events inside the cell.
The combination of the signaling molecule with a receptor results change in the conformation of the receptor. The change in the receptors is known as known as receptor activation.