Biology (11th Edition)

Published by McGraw-Hill Education
ISBN 10: 1259188132
ISBN 13: 978-1-25918-813-8

Chapter 9 - Cell Communication - Review Questions - Apply - Page 185: 1

Answer

B.

Work Step by Step

A. is wrong since steroids are not proteins and, thus, cannot be enzymes, and C. can be eliminated because steroid signalling usually acts directly on gene expression, not by making second messengers. D. is incorrect because steroids receptors don't work through G proteins.
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