Biology 1202B Lecture Notes - Lecture 5: Sucrose, Starch, Exergonic Reaction

• School: Western University
• Department: Biology
• Course: Biology 1202B
• Professor: Gardiner/ Murphy

Document Summary

Noncyclic produces atp and nadph in roughly equal quantities: but, the calvin cycle consumes more atp than nadph. Cyclic allows the chloroplast to generate enough surplus atp to satisfy the higher demand of. Chemiosmosis the mechanism by which chloroplasts and mitochondria generate atp: oxidative phosphorylation mitochondria, photophosphorylation chloroplast. Cytochrome complex pumps h+ from stroma to thylakoid lumen. H+ is high concentration in lumen and low concentration in stroma. Also h+ comes from the splitting of water molecules. Proton-motive force: provides energy for atp synthase. Photosynthesis: carbon dioxide + water + light glucose and oxygen. Calvin cycle: reactions occur in the chloroplast stroma and the enzyme is rubisco, light independent reaction, rubisco attaches the carbon from co2 to ribulose bisphosphate. This is catalyzed by rubisco and then this molecule splits in half to form two. 3-phosphoglycerate molecules per co2: reduction phase each molecule that was created from the split receives another phosphate group from atp to form 1,3 bisphosphoglycerate.