Light reaction

Light reactions are the first processes of photosynthesis. In them, light is absorbed by molecules of the green pigment chlorophyll. The light is used to "charge" an electron, which is transported via an electron transport system[?] to a molecule of [[NADP⁺]], which turns into the hydrogen carrier NADPH[?] (used later on in the Calvin cycle).

In the meantime, a molecule of water is split. The oxygen is released into the atmosphere, while the hydrogen ions (which are merely protons[?] after being split from oxygen) diffuse through Transmembrane ATPase. This energy is harnessed to synthesize a molecule of ATP.

Raw Materials needed:

• Light energy
• Water

Materials produced:

• Oxygen
• ATP
• NADPH