Biology (11th Edition)

Published by McGraw-Hill Education
ISBN 10: 1-25918-813-2
ISBN 13: 978-1-25918-813-8

Chapter 9 - Cell Communication - Review Questions - Understand: 3

Answer

C.

Work Step by Step

By definition, kinases add phosphate, and phosphatases remove it: C. B. is wrong since it is the opposite of this, and A. refers just to amino acids, not to enzymes. D. can be excluded since it refers to the initial binding of a signal to a receptor, not to addition/removal of phosphate.
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