Question
Give comparison between the following:
Cyclic and non-cyclic photophosphorylation
Cyclic and non-cyclic photophosphorylation
| Cyclic Photophosphorylation | Non-cyclic Photophosphorylation |
| 1. Only PS I works in this. | 1. Both PS I and PS II work in this. |
| 2. The electron released from the chlorophyll molecule comes back to the same chlorophyll through acceptor substances. | 2. The path of the electron is non-cyclic. Water is the main source of electrons. The last electron acceptor is NADP. In this the electron released from chlorophyll does not reach chlorophyll again. |
| 3. NADP. $H _2$ is not formed, hence $CO _2$ assimilation decreases. | 3. NADP. $H _2$ is produced which is used in $CO _2$ assimilation. |
| 4. $O _2$ is not released. | 4. $O _2$ is released. |
| 5. It is mainly found in green plants and bacteria. | 5. Found only in green plants. |
| 6. Only ATP is produced in it. | 6. Both ATP and NADPH are produced in this. |
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