Question

Glucose synthesis occurs during which stage of $C_3$ cycle?

• A. Carboxylation
• B. Oxygenation
• C. Reduction
• D. Regeneration

Answer 1

Answer: (C)

During reduction stage of $C_3$ cycle, a series of reactions lead to the formation of glucose. The steps involve utilisation of two molecules of $ATP$ for phosphorylation and two of $NADPH$ for reduction per $C{O}_2$ molecule fixed. The fixation of six molecules of $C{O}_2$ and $6$ turns of the cycle are required for the removal of one molecule of glucose from the pathway.