Energy required for ATP synthesis in PSII comes from

Options

A. Proton gradient
B. Electron gradient
C. Reduction of glucose
D. Oxidation of glucose

Answer

A

Explanation

Photosystem II is a photosynthetic pigment system. It picks up electron released during photolysis of water. The same is extruded on the absorption of light energy. As the extruded electron passes over cytochrome b6 – f complex, it energies passage of protons picked up by PQ to create proton gradient for the synthesis of ATP rom ADP and inorganic phosphate. The photophosphorylation is non-cyclic.