Question
Give comparison between the following: Cyclic and non-cyclic photophosphorylation
| Cyclic photophosphorylation | Non-cyclic photophosphorylation | ||
| i. | It involves the participation of only PS I. | i. |
It involves the participation of both PS I and PS II.
|
| ii. |
This system is not concerned with photo-oxidation of water.
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ii.
|
The first step of this system is photo-oxidation of water resulting into $\mathrm{H}^{+}, \mathrm{e}^{-}$and release of $\mathrm{O}_2$. |
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iii.
|
It is only concerned with the production of ATP.
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iii.
|
It is concerned with the reduction of $NADP^+$ and production of ATP.
|
|
iv.
|
It occurs under special conditions when NADPH starts accumulating.
|
iv.
|
It occurs under normal conditions.
|
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