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Photosynthesis - Light Reactions

Discussion in 'DAT Discussions' started by skyisblue, Apr 17, 2007.

  1. skyisblue

    skyisblue 2+ Year Member

    Dec 25, 2006
    Let me know if the following makes sense:

    Light is absorbed by chlorophyll and H2O is split b/c light energy drives a transfer of 2e's and 1 H+ from H2O to NADP+ reducing it to NADPH. This is with the help of enzymes of course and O2 is given off in the process when H2O is oxidized or split.
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  3. DailyDrivenTJ

    DailyDrivenTJ 2+ Year Member

    Mar 20, 2007
    Remember the light reaction takes in two different photosystems. If I remember correctly, H2O is split in PII and in PI reduces the NADP+. In between ATP is generated via cyclic and non-cyclic pathways.

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