Question

Identify the correct sequence of stages of Calvin cycle.

• A. Reduction $\to$ Carboxylation $\to$ Regeneration
• B. Carboxylation $\to$ Regeneration $\to$ Reduction
• C. Carboxylation $\to$ Reduction $\to$ Regeneration
• D. Reduction $\to$ Regeneration $\to$ Carboxylation

Answer 1

The correct option is C Carboxylation $\to$ Reduction $\to$ Regeneration

The correct sequence of stages in Calvin Cycle are

1.Carboxylation- RuBP (5 carbon) is carboxylated by $C{O}_2$ in presence of RuBisCO

2.Reduction- of 1,3 bis phosphoglycerate by NADPH in presence of glyceraldehyde -3 phosphate dehydrogease, producing Glyceraldehyde -3 phosphate (G3P) and $NAD{P}^{+}$

3.Regeneration-of RuBP, five G3P molecules produce three RuBP molecules utilizing three ATP

So, the correct answer is 'Carboxylation $\to$ reduction $\to$Regeneration