Biology 1002B Lecture : 19- Lecture 8- Photosynthesis II
Document Summary
Reduction: co2 is being fixed on an organic molecule and it is being reduced: nadph is being oxidized to nadp+ Regeneration: regenerating rubp, only one net carbon is produced and the other five are recycled as. Rubp: regenerates rubp to continue to cycle. Splitting of water: pheophytin (pq) transporting the electron to the cytochrome complex, nadp+ reductase; takes proton from the stroma to form nadph, this indirectly affects the lumen proton gradient by removing protons from the stroma. Low ph level means high concentration of protons. Adp/atp low ratio = low adp and high atp. Rubisco has three substrates: carbon dioxide, rubp, oxygen - seen as a competitive inhibitor, 1 turn of the calvin cycle produces 1 net carbon, 3 turns produces 3 g3p, 6 turns produces one glucose molecule. G3p is the starting point for synthesis and is used to make; Starches: cellulose, amino acids, proteins, nucleic acids.
