Photosynthesis Photosynthesis Conversion of radiant energy to chemical energy through the formation of sugar . The radiant energy is transformed temporarily into energy-storing compounds. The energy from the energy storing compounds is used to synthesize sugar. But getting from 6CO2 and 6H2O to C6H12O6 and 6O2 is not one simple step. It's a scenic route.
Light reaction is the capture of light energy in the chloroplast of plant cells.
The chloroplast is an organelle in the cell encased in a membrane. The inside of the chloroplast is composed of a network of stacked membranes called thylakoids and the 'juice' around these membranes called the stroma. Light reaction takes place in association with the thylakoids . But not just any light, it has to be red or blue to be most efficient. The electron can lose its excess energy in a couple of ways.