Photosynthesis160-page11

Photosynthesis160-page11 - the ability to do the cyclic...

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Photosynthesis - 11 2 . Cyclic Photophosphorylation U s e s Photosystem I Electron Transport System ADP and P Inputs Light energy Outputs ATP Process Cyclic Photophosphorylation only uses Photosystem I and produces ATP. The earliest prokaryotes, and today's bacteria lack Photosystem II, and use photosynthesis just to produce ATP. All photosynthetic organisms retain
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Unformatted text preview: the ability to do the cyclic process. In cyclic photophosphorylation, electrons released from the chlorophyll p700 are returned back to Photosystem I after passing through the chain of electron carriers. Cyclic Photophosphorylation Before we go much further, we need to discuss how ATP is really made....
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