Campbell Biology (10th Edition)

Published by Pearson
ISBN 10: 0321775651
ISBN 13: 978-0-32177-565-8

Chapter 9 - 9.3 - Concept Check - Page 172: 2

Answer

Carbon dioxide comes from pyruvate oxidation and the citric acid cycle.

Work Step by Step

If you review Concept 9.3, you will see that for each 6 carbons in a glucose which is respired away, 2 are lost during pyruvate oxidation. Each glucose is used to make 2 pyruvate; Four are lost in the citric acid cycle.
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