Answer
b) the movement of H+ across a membrane down its concentration gradient
Work Step by Step
The movement of H+ down its concentration gradient actives the ATP synthase in the electron transport chain to produce ATP.
Campbell Biology: Concepts & Connections (9th Edition)
by Taylor, Martha R.; Simon, Eric J.; Dickey, Jean L.; Hogan, Kelly A.; Reece, Jane B.
Published by
Pearson
ISBN 10:
0-13429-601-X
ISBN 13:
978-0-13429-601-2
Chapter 6 - Review - Page 109: 5
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