BIOL1007 Lecture Notes - Lecture 8: Great Oxygenation Event, Photosystem I, Light-Independent Reactions
Document Summary
Photosystem 2 when light hits it an electron is activated which allows splitting of water in oxygen and hydrogen. The elctron moves up chain into plastaconon which moves hydrogen proton from stroma across and into lumen (interior space) and into cytochrome when hands into photosystem 1 which is activated by different light wavelength. More hydrogen into lumen which drives atp synthesise which adds phosphate group which moves around cell as store of energy. Did notes on this but it disappeared so watch again coz its got the calvin cycle shit. Green bacteria have chloroplasts, w light harvesting complexes. Engulfing bacteria and mitochondria, one bacteria engulfing another bacteria moto has double membranes. The first land plants, about 450 million years ago. 02 reacted in upper atmosphere to produce ozone- uv protection plants could start colonizing the land. Plants are wide spread on land but versy simple morphology.
