Chapter 11, Problem 4aCP

Summary Introduction

To review:

The production of cyclic AMP (cAMP) in the target cell as result of hormone stimulation with a diagram and the functions of cAMP as the second messenger.

Introduction:

Substances such as glycoproteins and polypeptides are not able to pass through the lipid barrier of the plasma membrane of the target cell. So, their action is mediated through intracellular mediators known as second messengers. The specific enzyme proteins in the plasma membrane are activated after hormones bind to them. This leads to the production of second-messenger, which is essential to exert their effects.