Answer
C. Activation of G protein-coupled receptors.
Work Step by Step
C, instead of involving addition of phosphate, involves the addition of GTP to the G protein, which then turns on further steps in cell signalling.
Campbell Biology (12th Edition)
by Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky
Published by
Pearson
ISBN 10:
0135188741
ISBN 13:
978-0-13518-874-3
Chapter 11 - Test Your Understanding - Levels 3-4 - Applying/Analyzing - Page 233: 7
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