Human Biology, 14 Edition

Published by McGraw-Hill Education
ISBN 10: 1-25924-574-8
ISBN 13: 978-1-25924-574-9

Chapter 16 - Engage - Page 357: 1


1. Both follicle stimulating hormone (FSH) and somatotropin /growth hormone ( STH/GH) are protein hormones. They act by binding to the cell plasma membrane and activating a second messenger within the cell.

Work Step by Step

Other second messengers used by other hormones include cGMP, inositol triphosphate, Ca++ ions, and diacylglycerol.
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