CHY 205 Lecture Notes - Lecture 3: Ethanol Fermentation, Galactose, Equilibrium Constant

• School: Ryerson University
• Department: Chemistry
• Course: CHY 205
• Professor: Charlottede Araujo

Document Summary

Add the delta g"s to get the (cid:271)otto(cid:373) (cid:448)alue. Flip the second reaction so that the delta g value becomes positive (+30. 5) The inorganic phosphates are on opposite sides, so you remove the inorganic phosphate equalling the final coupled reaction (-22. 5kj/mol) Do(cid:374)"t just flip (cid:271)e(cid:272)ause there"s t(cid:449)o (cid:374)egati(cid:448)es, look at the fi(cid:374)al path(cid:449)ay a(cid:374)d use this to (cid:272)o(cid:374)sider (cid:449)hat rea(cid:272)tio(cid:374) you flip. Final mixture has twice as much galactose-6-phosphate as fructose-6-phosphate. Use delta g=-rtlnkeq: determine the keq (equilibrium constant) Keq= (fructose 6-phosphate/ galactose 6-phosphate) (products over reactants!!!!) Use glucose as our source to produce atp. Alcoholic fermentation occurring in yeast (glucose converted to pyruvate) Glycogen phosphyorylase: glucose molecules cleaved from glycogen and starch yielding glycogen-1-phosphate. Importance: role in atp, providing information of cofactors, isolation of enzymes. Have to be able to extract free energy from glucose. How do we do this: activate by adding the phosphate group (phosphorylation, collecting the energy from the high energy metabolites.