Question
Question: Describe the flow of electrons in noncyclic photophosphorylation and compare it with that of cyclic ...
Describe the flow of electrons in noncyclic photophosphorylation and compare it with that of cyclic photophosphorylation.
Explanation
Solution
The biochemical process which includes the addition of phosphate to an organic compound. Addition of phosphate to glucose results in glucose monophosphate and the addition of phosphate to adenosine diphosphate to form adenosine triphosphate are some examples.
Complete step by step answer:
Cyclic photophosphorylation Signifies to the synthesis of ATP during the light reaction of photosynthesis coupling to a cyclic passage of electrons to and from P700 | Noncyclicphotophosphorylation is the synthesis of ATP during the light reaction of photosynthesis in which an electron donor is required and oxygen is produced as a byproduct |
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Occurs in isolated chloroplasts and photosynthetic bacteria | Occurs in plants, algae, and cyanobacteria |
electrons are separated from water and passed through PSII and PSI before ending up in NADPH. This process needs light to be absorbed twice once in each photosystem and it produces ATPOccurs in anoxygenic photosynthesis | Occurs in oxygenic photosynthesis |
Electrons move in a cyclic pattern | Electrons move in a linear pattern |
Only photosystem I is involved | Both photosystems I and II are involved |
Electrons are at first expelled from the reaction center of PSI | Electrons are first-expelled from the reaction center of PS II |
Photolysis does not occurOxygen is not producedMainly occurs in anaerobic conditionsCannot be inhibited by Diuron | Photolysis occursOxygen is producedcoenzymes are producedMainly occurs in aerobic conditionsInhibited by Diuron |
Note:
The other pathway non-cyclic photophosphorylation is known to be a two-stage process involving two different chlorophyll photosystems. Being a light reaction, non-cyclic photophosphorylation occurs in the thylakoid membrane of the granna's.