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Absorption of a photon results in the excited special pair in a reaction center

ID: 226791 • Letter: A

Question

Absorption of a photon results in the excited special pair in a reaction center (i.e. P870*) becoming an excellent electron acceptor. True False Excitation by absorption of a photon results in charge separation at the photochemical reaction center. True False Photosystem II (PSII) can best be described as a Fe-S reaction center that passes electrons through the cyt b_6f to Photosystem I (PSI). True False Both PSII and PSI utilize plastoquinone as electron carriers. True False Plastocyanin is an electron carrier in photosynthesis. Its functional analogue in oxidative phosphorylation is ubiquinone. True False In PSII, absorption of four photons is required to transform plastoquinone to its fully reduced form, PQ_bH_2 True False

Explanation / Answer

1. false. the exitation of PSII by photon makes its a electron donor.

2. true.

3. true.

4. false. only PSII utilise plastoquinone as electrol acceptor.

5. True.

6. true