AP BIOLOGY

Detailed explanation-1: -This process is fueled by, and dependent on, ATP and NADPH from the light reactions. Unlike the light reactions, which take place in the thylakoid membrane, the reactions of the Calvin cycle take place in the stroma (the inner space of chloroplasts).

Detailed explanation-2: -ATP helps fuel the Calvin cycle in that it’s third phosphate can be removed-forming ADP-in order to provide energy for the cycle to occur. On the other hand, NADPH acts as a reducing agent, by converting into NADH so that high-energy electrons can be added to form saccharides.

Detailed explanation-3: -The reactions of the Calvin cycle add carbon (from carbon dioxide in the atmosphere) to a simple five-carbon molecule called RuBP. These reactions use chemical energy from NADPH and ATP that were produced in the light reactions. The final product of the Calvin cycle is glucose.