Place the following events in the correct order for the two-photosystem light re

Question

Place the following events in the correct order for the two-photosystem light reactions. Electrons are transferred to the b6F complex with concomitant influx of protons into the thylakoid lumen. Electrons are passed through to ferredoxin and then ultimately to NADP^+, reducing the latter to NADPH. Electrons are transferred to plastoquinones, which serve as intermediate electron transporters. Light energy is absorbed by photosystem II, placing it in an excited state, causing it to release electrons, which are replaced by the oxidation of water to oxygen. Electrons are transferred to photosystem I via plastocyanin. 4-3-5-1-2 3-4-2-5-1 4-3-2-5-1 4-3-1-5-2

Explanation / Answer

Answer is 4-3-1-5-2

4) Light energy is absorbed by photosystem II, placing it in an excited state, causing it to release electrons, which are replaced by the oxidation of water to oxygen.

3) Electrons are transferred to plastoquinones, which serve as intermediate electron transporters.

1) Electrons are transferred to the b6F complex with concomitant influx of protons into the thylakoid lumen.

5) Electrons are transferred to photosystem I via plastocyanin.

2) Electrons are passed through to ferredoxin and then ultimately to NADP^+, reducing the latter to NADPH.

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