In cyanobacterial anoxygenic photosynthesis where is the ele

In cyanobacterial anoxygenic photosynthesis where is the electron donted?

A. PS1

B. PS2

C. either PS1 or PS2

D. Q

E. NAD(P)+

Solution

Answer would be

E. NAD(P)+

Explination

In cyanobacterial anoxygenic photosynthesis, as light is absorbed by reaction-center(P840), It gets in excited state with a large negative reduction potential, thus readily donates the electron to bacteriochlorophyll 663 which passes it down the electron chain. Finally the electron is transferred through a series of electron carriers and complexes until it is used to reduce NAD⁺

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