BIOS 101 Lecture Notes - Lecture 9: Facultative Anaerobic Organism, Ethanol Fermentation, Pyruvic Acid
Document Summary
Organisms require anaerobic conditions and are killed by oxygen. Include primarily bacteria in condition devoid of oxygen: ex: soil or mud at bottom of deep water, facultative anaerobes i. Alcoholic fermentation: yeast are facultative anaerobes, commercial alcoholic fermentation, bread making, wine and beer making, why is max alcoholic content of wine 12%, above 12% killing of yeast ii. Important concepts: considerable energy remains in the products of fermentation. In substrate-level phosphorylation, an enzyme transfers a phosphate group from an organic substrate molecule to. Adp. the reaction products are a new organic molecule and a molecule of atp i. Nad+ (not oxygen) accepts electrons from h atoms that were removed from glucose ii. Step 2: reactions that regenerate nad+ by transferring electrons from. The nad+ is then used in glycolysis to accept. H atoms which were originally part of the glucose molecule: 2 c2h4o3 + 2nadh 2d2h5oh + 2co2 + 2nad, or 2c3h4o3 + 2nadh c3h6o3 + 2nad, fermentation a.
