Compare oxidative phosphorylation and photo phosphorylation.


  • The process of formation of ATP in chloroplast in the presence of sunlight
  • Photo-phosphorylation is of two types:

    • Non-cyclic photo-phosphorylation
    • Cyclic photo-phosphorylation

You can refer to the study material at the following link for details!!/vhOFwj22@Fv9PMuM4o8bJQ!!


Oxidative Phosphorylation

  • Production of proton gradient needed for the production of ATP is provided by the energy of oxidation−reduction reaction. Therefore, the process is called oxidative phosphorylation.
  • Complex V (ATP synthase) is involved. It has two major components

    • F 0 − integral membrane protein; forms a channel through which H + cross the inner membrane
    • F 1 − passage of H + induces conformational changes in F 1 , which forms a site for synthesis of ATP from ADP; for each ATP produced, 2H + pass through F 0 , down the electrochemical proton gradient

The basic difference between them is as follows:

Photophosphorylation    Oxidative phosphorylation  
 Occurs in chloroplast  Occurs in mitochondria 
 Requires presence of sunlight  Sunlight is not required 

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