Question

unit 2 exam 2025 - 26
which of the following undergoes photolysis?
carbon dioxide
nadph
water
atp

Explanation:

Photolysis is the splitting of a compound by light - energy. In photosynthesis, water undergoes photolysis. When light energy is absorbed by photosystems in the thylakoid membranes, water molecules are broken down into oxygen, protons, and electrons. Carbon dioxide is fixed during the Calvin - cycle and not photolyzed. NADPH is a product of the light - dependent reactions and is not itself photolyzed. ATP is also produced during the light - dependent reactions through chemiosmosis and is not subject to photolysis.

Answer:

Water