Photosynthesis is the process plants, algae, and some
bacteria use to convert light energy into chemical energy.
They take in sunlight, carbon dioxide (CO₂), and water
(H₂O) to produce glucose (a type of sugar) and oxygen
(O₂). This process mainly happens in the chloroplasts of
plant cells, where the green pigment chlorophyll absorbs
sunlight.
THE WORD EQUATION FOR PHOTOSYNTHESIS:
6CO2 + 6H2O + Light Energy → C6H12O6 + 6O2
Light-Dependent Reactions (happen in the thylakoid membranes)
1.Sunlight is absorbed, splitting water molecules into
oxygen, protons, and electrons.
2.Oxygen is released as a byproduct.
3.ATP (energy) and NADPH (electron carrier) are produced.
Calvin Cycle (Light-Independent Reactions) (happen in the
stroma)
4.Uses ATP and NADPH to convert CO₂ into glucose.
5.No light is needed for this step.