Question

________ is the process of synthesis of ATP from ADP and inorganic phosphate in the presence of light.

• A. Photophosphorylation
• B. Oxidative phosphorylation
• C. Phosphorylation
• D. Both a and b

Answer 1

The correct option is A Photophosphorylation

Phosphorylation involves the addition of phosphate to an organic compound.
For example: Addition of phosphate to ADP (adenosine diphosphate) to form ATP.

When ATP is synthesized from ADP and Pi (inorganic phosphate), in the presence of light (photons), it is called photophosphorylation.

Oxidative phosphorylation occurs during cellular respiration. In this process, ATP is synthesised due to flow of protons from the intermembrane space of mitochondria into the matrix of mitochondria.