Anatomy & Physiology: The Unity of Form and Function, 7th Edition

Published by McGraw-Hill Education
ISBN 10: 0073403717
ISBN 13: 978-0-07340-371-7

Chapter 3 - Cellular Form and Function - Study Guide - Testing Your Recall - Page 110: 12

Answer

second messanger

Work Step by Step

When a hormone cannot enter a cell, it activates the formation of a second messenger inside the cell.
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