Question

consider the following events of photosynthesis

1. light energy excites electrons.
2. water molecules are split.
3. nadph is formed.

in which systems do each of these events occur?

Explanation:

Step1: Recall light - dependent reactions

In the light - dependent reactions of photosynthesis, light energy is first absorbed. This excites electrons in chlorophyll.

Step2: Understand water splitting

After electrons are excited, water molecules are split to replace the lost electrons in the photosystem. This also releases oxygen and hydrogen ions.

Step3: Know NADPH formation

The excited electrons are then used to form NADPH through a series of electron - transfer reactions.

Answer:

All of these events occur in the light - dependent reactions of photosynthesis.