Chloroplasts are the sites within plants where this process changes light into chemical energy
However, in biological systems, electrons are carried between one site and... [DOC] [TLE] Chloroplasts and Photosynthesis - Molecular Biology of the Cell ... [PAR] In plants and algae, which developed much later, photosynthesis occurs in a .... 
During the electron-transport process, H is pumped across the thylakoid .... that 
enable light energy to be converted into chemical energy (Figure 14-43).