Photophosphorylation is a synthesis of:

Explanation

During photophosphorylation, light energy is captured by chlorophyll and other pigment molecules in the thylakoid membranes of chloroplasts. This energy is then used to generate ATP through the phosphorylation of ADP (adenosine diphosphate). In other words, photophosphorylation involves the synthesis of ATP from ADP and inorganic phosphate (Pi) using the energy obtained from light. This process occurs via two main mechanisms: cyclic and non-cyclic photophosphorylation. In cyclic photophosphorylation, only ATP is produced by utilizing light energy and an electron transport chain within the thylakoid membrane. Non-cyclic photophosphorylation involves both ATP and NADPH (reduced form of nicotinamide adenine dinucleotide phosphate) synthesis and requires the participation of both photosystem I and photosystem II. Therefore, photophosphorylation is the synthesis of ATP from ADP.