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

(a) The synthesis of ATP is directly linked to the development of proton gradient across the thylakoid membranes of a chloroplast. It result when the water molecule splits inside the inner membrane and form `H^(+)` and `H^(-)` ions
The energy of ATP synthesis comes from proton gradient which develops along the inner membrane , e.g., in case of mitochondria in electron transport chain and in chloroplast in the PS II.
The other option (b),( c) and (d) are not involved in the synthesis of ATP molecule.