Question

How many molecules of ATP & NADPH are spent to fix one CO2 molecules in calvin cycle?
a. ATP – 3 NADPH – 2
b. ATP – 18 NADPH – 12
c. ATP – 9 NADPH – 6
d. ATP – 2 NADPH – 3

Answer 1

Answer: b. ATP - 18 NADPH - 12, I hope its correct

Explanation:

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.