1. ATP (Adenosine Triphosphate): This is the energy currency of the cell. It's produced by the light-dependent reactions using the energy from sunlight. ATP will be used in the Calvin cycle, the light-independent reactions, to power the production of sugar.
2. NADPH (Nicotinamide adenine dinucleotide phosphate): This is a reducing agent. It carries high-energy electrons that will be used to reduce carbon dioxide (CO2) into sugar during the Calvin cycle.
Essentially, the light reactions use light energy to convert water into oxygen and create ATP and NADPH, which are then used in the Calvin cycle to produce sugar.
