Question

Write any six differences between cyclic photophosphorylation and non-cyclic photophosphorylation.

Answer 1

Cyclic photophosphorylation	Non-cyclic photophosphorylation
1- It occurs in photosystem I.	1- It occurs in both photosystem I and photosystem II.
2- Only Atp is produced	2- Both ATP and NADPH are produced.
3- Electrons expelled by photosystem and return back.	3- Electrons expelled by photosystem but do not return back.
4- Photolysis of water does not occur.	4- Photolysis of water occur.
5- Oxygen is not released.	5- Oxygen is released.
6- Water is not consumed.	6- Water is consumed.