Question

Photolysis of water requires

• A. Light
• B. Chlorophyll
• C. Both A and B
• D. Electron transport

Answer 1

Answer: (C)

Both A and B

A) As the name suggests, photolysis of water requires light.

B) Photolysis is the breakdown of water into hydrogen and oxygen using the light during the photosynthesis process. Light energy is absorbed by chlorophyll and is used to regenerate adenosine tri-phosphate or ATP and split water. Photolysis of water results in the release of oxygen, as a by-product, and the release of hydrogen.

C) Both light and chlorophyll are required in the photolysis of water.

D) Electron transport is not required in the photolysis of water.
So the correct answer is 'Both A and B'.