Campbell Biology (11th Edition)

Published by Pearson
ISBN 10: 0-13409-341-0
ISBN 13: 978-0-13409-341-3

Chapter 9 - 9.4 - Concept Check - Page 178: 1


No ATP or water would be formed. Any oxidative phosphorylation would come to a halt.

Work Step by Step

The function of oxygen in the electron transport chain is as an electron acceptor. That is, when $\mathrm{H}^+$ protons cross the mitochondrial membrane through ATP synthase, they form water with the oxygen and electrons. So, if there were no oxygen, this water would not be formed. Additionally, there would then be a buildup of $\mathrm{H}^+$ protons inside the mitochondrion, since they are no longer being transformed into water. This buildup increases internal $\mathrm{H}^+$ concentration substantially and will cause dynamic equilibrium to be reached, meaning that $\mathrm{H}^+$ protons no longer will cross the membrane through ATP synthase, halting the production of ATP molecules as well.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.