Step-by-Step Photosynthesis
6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂ (light energy, chlorophyll). Step through the light stage in the grana and the dark stage in the stroma.
Light stage - grana
Step 1 of 8Light stage: light absorbed
Photosynthesis is an anabolic process: light energy is converted to chemical energy. In the light stage, light is trapped by chlorophyll in the grana (thylakoid membranes) of the chloroplast. Electrons in the chlorophyll are raised to a higher energy level and leave the molecule.
light energy chlorophyll high-energy electrons
Moderate light gives a steady rate of photosynthesis.
Build the photosynthesis summary
Drag each molecule into the stage where it belongs, or tap a label then tap a box.
Light stage: inputs
thylakoid membrane
Light stage: outputs
passed to the Calvin cycle
Calvin cycle: inputs
stroma
Calvin cycle: outputs
carbohydrate made