Biology
Grade-9
Easy
Question
Cyclic photophosphorylation is associated with _____________.
- Photosystem I
- Photosystem II
- Both a & b
- None of the above
Hint:
An integral membrane protein complex which uses light energy for catalyzing the transfer of electrons across the thylakoid membrane from plastocyanin to ferredoxin.
The correct answer is: Photosystem I
-
Cyclic photophosphorylation is carried out by PS I only.
-
This process takes place in stroma lamellae membrane. An external source of electrons is not required.
-
There is no evolution of oxygen takes place because it is not connected with photolysis of water. Cyclic photophosphorylation produces ATP only.
Cyclic photophosphorylation is carried out by PS I only.
This process takes place in stroma lamellae membrane. An external source of electrons is not required.
There is no evolution of oxygen takes place because it is not connected with photolysis of water. Cyclic photophosphorylation produces ATP only.
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