The light reactions of photosynthesis occur on the membranes labeled "grana." Which observation supports this localization?
- A
The outer chloroplast membrane absorbs visible light directly
- B
Cristae produce ATP only in the dark
- C
The Calvin cycle enzymes are bound to the thylakoid lumen
- Dcheck_circle
Chlorophyll and electron carriers are embedded in thylakoid membranes
Explanation
Photosystems with chlorophyll and electron transport components are embedded in thylakoid (grana) membranes, where light absorption drives ATP and NADPH formation.