The light reaction of photosynthesis produces two key molecules:

* ATP (Adenosine Triphosphate): This is a high-energy molecule that serves as the primary energy currency of cells.

* NADPH (Nicotinamide Adenine Dinucleotide Phosphate): This is an electron carrier that carries high-energy electrons.

These molecules are then used in the Calvin cycle, the second stage of photosynthesis, to convert carbon dioxide into glucose.