Chapter 13, Problem 51SA

Summary Introduction

To review:

The reactionsthattake place in the reduction phase of the Calvin cycle.

Introduction:

The Calvin cycle occurs within the chloroplast’s stroma. The reactions that occur during this cycle take place in the absence of sunlight and hence, are often referred toas thedark reactions. These require sufficient amounts of NADPH (nicotinamide adenine dinucleotide phosphate) and ATP (adenosine triphosphate).The overall reactions have been described below:

${\text{3CO}}_{\text{2}}+\text{6NADPH}+\text{9ATP}\to \text{glyceraldehyde-3-phosphate}+{\text{6NADP}}^{\text{+}}+\text{9ADP}+\text{8Pi}$

In the above reaction, CO₂, represents carbon dioxide, ADP is adenosine diphosphate, and Pi is inorganic phosphate.