At which point is G3P removed from the calvin cycle to be used in the production of Carbohydrates?

A. During photophosphorylation

B. During carbon fixation

C. Immediately after reduction

D. Immediately after regeneration

Answer:- C. Immediately after reduction

The correct answer is ‘immediately after reduction’. The Calvin cycle immediately stops using G3P after reduction. Plants use the Calvin cycle, a metabolic process, to turn carbon dioxide into sugar. Carbon fixation, reduction, and regeneration are its three phases.

The enzyme RuBisCO fixes carbon dioxide during the carbon fixation cycle, resulting in the formation of two molecules of 3-phosphoglycerate (3-PGA). 3-PGA is converted to glyceraldehyde 3-phosphate (G3P) during the reduction stage. RuBP, the molecule that fixes carbon dioxide in the first stage, is rejuvenated using G3P in the regeneration stage. For every six molecules of carbon dioxide that are fixed, one molecule of G3P is eliminated from the Calvin cycle.