Question: during which stage of photosynthesis does the oxidation of nadph occur?
Answer: In stage 4, the ATP and NADPH generated in stages 2 and 3 provide the energy and the electrons to drive the fixation of CO2 and synthesis of carbohydrates. These reactions occur in the thylakoid stroma and cytosol. Chlorophyll a is the only light-absorbing pigment in reaction centers.