Answer :
Answer: Calvin cycle is the term used for the reactions of photosynthesis that use the energy stored by the light-dependent reactions to form glucose and other carbohydrate molecules. The Calvin cycle has three stages in order to produce glucose and other carbohydrate molecules
1) Carbon fixation: the enzyme RuBisCO incorporates carbon dioxide into an organic molecule.
2) reduction: the organic molecule is reduced.
3) regeneration: RuBP, the molecule that starts the cycle, is regenerated so that the cycle can continue.
In summary, it takes six turns of the Calvin cycle to fix six carbon atoms from CO2. These six turns require energy input from 12 ATP molecules and 12 NADPH molecules in the reduction step and 6 ATP molecules in the regeneration step.
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