1. elementkid415's Avatar
    Hey guys I really need your help

    So I have two questions that I have to complete. And they really make me confused.

    the first is : The molecule that precedes the electron transport chains of both photosystem I and photosystem II is an electron acceptor.
    What is the original molecule that is the electron donor for both of these systems?

    and the second it : Explain how the light reactions would be affected if there were no concentration gradient of protons across the thylakoid membrane.

    Help is in need!


    Thank you in advance.
    11-09-08 08:58 PM
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