Answer: Thylakoid membrane, within the grana.
- A Stroma, the fluid-filled matrix
- B Matrix found inside mitochondria
- C Thylakoid membrane, within the grana
- D Outer membrane of the chloroplast
Correct answer: C. Thylakoid membrane, within the grana
Explanation: Light reactions, including light absorption, water splitting and ATP/NADPH formation, occur on the thylakoid membranes, which contain the photosystems and electron transport chain.
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.