Final answer:
Photosynthesis occurs in two stages: the light-dependent reactions and the light-independent reactions. In the light-dependent reactions, light energy is used to produce ATP and NADPH. These energy-rich molecules are then used in the light-independent reactions, where carbon dioxide is converted into glucose.
Step-by-step explanation:
Photosynthesis occurs in two stages: the light-dependent reactions and the light-independent reactions. In the light-dependent reactions, light energy is absorbed by chlorophyll in the thylakoid membrane and is used to produce ATP and NADPH. These energy-rich molecules are then used in the light-independent reactions, also known as the Calvin cycle, which occurs in the stroma. In the Calvin cycle, energy from ATP and NADPH is used to convert carbon dioxide (CO2) into glucose (GA3P). While the light-independent reactions do not directly depend on light, the energy carriers of ATP and NADPH are generated from light energy in the light-dependent reactions.