Foundation and evolution of photosynthesis

Photosynthesis is a biological process in which the energy of light radiation is converted into the energy of chemical bonds [3, 5-8], The ability to convert light 

Bioinorganic Photochemistry Grazyna Stochel, Malgorzata Brindell, Wojciech Macyk, Zofia Stasicka, Konrad Szacilowski 

Significant quantities of oxygen forbidden 1 02 0.001 of present atmospheric level (PAL) I 

Polymerization of macromolecules (proteins nucleic acids, enzymes, 

UV photoassociation of intermediate organic materials (amino acids, etc) 

---

Nonetheless, photosynthesis did not evolve immediately at the origin of life. The failure to discover photosynthesis in the domain of Archaea implies that photosynthesis evolved exclusively in the domain of Bacteria. Eukaryotes appropriated through endosymbiosis the basic photosynthetic units that were the products of bacterial evolution. All domains of life do have electron-transport chains in common, however. As we have seen, components such as the ubiquinone-cytochrome c oxidoreductase and cytochrome hf family are present in both respiratory and photosynthetic electron-transport chains. These components were the foundations on which light-energy-capturing systems evolved. 

---