Difference Between Cyclic And Noncyclic Photophosphorylation

Photosynthesis process is said to be complete with light and dark reactions. The light reaction is the light-dependent reaction whereas the dark reaction is a light – independent reaction. Photophosphorylation is defined as the adding of phosphate group during the light reaction of photosynthesis in the presence of light. Here the phosphorylation occurs in the presence of light and therefore termed as photophosphorylation. It is divided into two types viz cyclic photophosphorylation and non-cyclic photophosphorylation. Before moving to differences, let us first understand the main similarities between the two. Both are dependent on light. Below are the differences between them.

Difference Between Cyclic And Noncyclic Photophosphorylation

Characteristics Cyclic Photophosphorylation Noncyclic Photophosphorylation
Found Anaerobic condition Aerobic condition
Photosystem | ||
Occurs Photosynthetic bacteria and isolated chloroplast Algae, cyanobacteria, plants, etc.
Oxygen production Yes No
Photosynthesis Anoxygenic Oxygenic
Photolysis Does not occurs Occurs
Product ATP Reduced coenzymes and ATP
Final electron acceptor P700 NADP+
Movement of electrons Cyclic Linear
Oxygen evolved No Yes

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