alleryPhotosystem I contains reaction center:
AP680
BP700 (absorbs at 700 nm)
CP420
DP800
Answer & Solution
Correct answer: B. P700 (absorbs at 700 nm)
**PS I:** reaction center P700. After excitation, P700* passes electron to ferredoxin
→ NADP+ reductase → produces NADPH.
Light hit PS I → P700+ becomes strong oxidant
gets re-reduced by PC (electrons from PSII).
**Z-scheme:** PSII pushes electrons up to PSI, then to NADP+.
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