describe the importance of the water splitting reaction of photocynthesis. When does it take place?

Question

How does this reaction affect other terrestrial organisms?

Answer 1

The water splitting happens in the light-dependent reactions. It's important because:
1. The H+ are kept to help generate ATP for the Calvin cycle.
2. The e- are kept to replenish electrons for the chlorophyll molecules.
3. The oxygen is not needed in photosynthesis, so it is "thrown away". This is the oxygen that animals breathe.