BIOL 112 Lecture Notes - Citric Acid Cycle, Pyruvic Acid, Glyceraldehyde 3-Phosphate

• School: McGill University
• Department: Biology (Sci)
• Course: BIOL 112
• Professor: Frieder Schoeck

Document Summary

Friday february 8 2013 without itself being used up. Catalyst: any substance that speeds up a chemical reaction: only reactions with overall g can be catalyzed, biological systems can"t initiate reactions by adding heat therefore enzymes are used to lower the activation energy. Enzymes: bind to the active site on specific substrates where they catalyze, catalyze reactions by using 1+ of, orienting substrates, inducing strain in the substrates, adding charges to substrates, cofactors. : binds reversibly to an e"s active: allosteric regulators allosteric regulator) or stabilize the inactive form (- a, of the e. When 1 binding site is occupied, it changes the others so that they bind other substrates more readily. E activation or inhibition occurs very quickly. First step in a metabolic pathway almost always a multi-subunit e negatively regulated by cooperative allostery. Glycolysis and redox reactions: glycolysis is followed by 2 metabolic processes, 1. 36 atp net energy trapped: 2.