AP BIOLOGY

Detailed explanation-1: -Three Stages of Cell Signaling First, reception, whereby the signal molecule binds the receptor. Then, signal transduction, which is where the chemical signal results in a series of enzyme activations. Finally, the response, which is the resulting cellular responses.

Detailed explanation-2: -Depending on the ligand’s origin (from the same cell, from the neighbour cell or from far distance), recptor-ligand interaction and signaling pathway activation is classified into four different types: autocrine, endocrine, paracrine and juxtacrine.

Detailed explanation-3: -D) generation, processing, reception, response, deactivation Explanation:-There are three stages in the process of cell signaling or communication: 1. Reception-a protein at the cell surface detects chemical signals. 2.