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What are the three stages of photosynthesis?

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What are the three stages of photosynthesis?

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  1. Three Main Stages of Photosynthesis:

    I) Light is absorbed and used to generate proton motive force and reducing power (as NADH or NADPH).

    II) Proton motive force is used to generate ATP.

    Once the PMF has been generated by the photosystems, the mechanism of ATP synthesis is essentially the same as in respiration. An ATP synthetase is found in the photosynthetic membranes works just like the one in respiratory membranes.

    III) ATP and NAD(P)H are used to fix carbon dioxide.

    The supply of ATP and NAD(P)H do not have to come from light energy. Autotrophic bacteria which use inorganic reactions as a source of energy can often also fix CO2.


  2. I) Light is absorbed and used to generate proton motive force and reducing power (as NADH or NADPH).

    II) Proton motive force is used to generate ATP.

    III) ATP and NAD(P)H are used to fix carbon dioxide.

  3. This is a very simple explanation for you.

    http://www.nibbleuniversity.com/websites...

    Next time try google or yahoo to actually search. Thanks

  4. god knows ! i did GCSE 3 years ago..all i remember is that the plant needs, sun light, water , etc and has chloplasts,cytoplasm,mitochondria,cell membrane, cell wall in the leaf structure ! hey i remembered quite well ! pat on my shoulder ! x

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