Answer: 3 ATP and 2 NADPH.
- A 1 ATP and 1 NADPH
- B 2 ATP and 3 NADPH
- C 6 ATP and 6 NADPH
- D 3 ATP and 2 NADPH
Correct answer: D. 3 ATP and 2 NADPH
Explanation: Each CO<sub>2</sub> fixed in the Calvin cycle consumes 3 ATP and 2 NADPH.
Simplified photosynthesis diagram: light energy, CO2, and H2O enter the leaf and are converted in the chloroplast into glucose and O2.
Concept context
Light reactions, the Calvin cycle, C 3 /C 4 /CAM pathways, photorespiration, and factors affecting the rate of photosynthesis. One of the highest-yield NEET chapters.