Question

Calvin Cycle: Requires how many NADH and ATP?

a) 6 NADH and 9 ATP
b) 12 NADH and 18 ATP
c) 18 NADH and 12 ATP
d) 9 NADH and 6 ATP

Answer 1

The Calvin Cycle requires 18 ATP and 12 NADPH for the fixation of six carbon atoms from CO2.

Step-by-step explanation:

The Calvin Cycle requires a specific number of ATP and NADPH molecules to convert carbon dioxide into glucose. For the fixation of six carbon atoms from CO2, it takes six turns of the Calvin cycle.

During these turns, a total of 18 ATP molecules are used - 12 ATP in the reduction step and 6 ATP in the regeneration step - as well as 12 NADPH molecules in the reduction step.