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Biology 8 Online
OpenStudy (anonymous):

When light energy excites electrons in photosystem II, where do the electrons to replace them come from? A. ATP B. photosystem I C. the light energy D. split water molecules

OpenStudy (deepika.comet):

its easy what u think..!!

OpenStudy (anonymous):

B?

OpenStudy (deepika.comet):

no the photosystem 2 is before photosystem 1

OpenStudy (anonymous):

A?

OpenStudy (deepika.comet):

Atp are produced not used..!!

OpenStudy (anonymous):

C?

OpenStudy (deepika.comet):

no i dont want to irritate you the answer is D - from water molecules..

OpenStudy (anonymous):

oh ok lol why is that?

OpenStudy (deepika.comet):

the water splits into H+ , OH- and e- these electrons released are used further this is called photolysis of water..

OpenStudy (anonymous):

ok thanks

OpenStudy (deepika.comet):

welcome

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