Biochemistry
Biochemistry
9th Edition
ISBN: 9781305961135
Author: Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher: Cengage Learning
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Chapter 22, Problem 13RE
Interpretation Introduction

Interpretation:

The electron transport chain that evolved first is to be determined.

Concept introduction:

Photosynthesis occurs in the presence of light, and water is converted to oxygen by oxidation and NADP+ is reduced to NADPH.

NADP+ + H2 NADPH + H+ + 12O2 

The NADH is oxidized to NAD+, while oxygen is reduced to water. The reaction is given as :

NADH + 12O2 + H+ NAD+ + H2

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