BIOLOGY 2EE3 Lecture Notes - Pentose Phosphate Pathway, Triose, Pyruvic Acid

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Pyruvate will be completely oxidized all 3 c atoms will be in the form of co2. Major e is still in molecule of pyruvate completely oxidized to co2 and hoh via citric acid cycle. [o] pathway involves high energy cofactors (nadh), not pyruvate. Pentose phosphate pathway = major pathway for nadph. 2 major product of glycolyis is pyruvate (2 molecules, 2 x triose from a hexose) Pyruvate then goes to citric acid cycle, where major part of e will be extracted. 3 sum of 1st and 2nd stages of glycolysis. 1st: glucose (cid:198) two trioses (interchangeable), two molecules of atp invested. 2nd: anaerobic conditions (in muscles, esp when working hard), no nadh produced. 3rd: anerobic conditions (in yeast) (cid:198) ethanol + co2. Glucose (cid:198) pyruvate, 2 x nadh, nadh (cid:198) nad+, atp molecules produced. Pyruvate + nadh + h+ (cid:197)lactatedehydrogenase(cid:198) l-lactate + nad+ 11 alcohol fermentation pyruvate (cid:198) pyruvate decarboxylase + acetaldehyde apcetapehyde, 2 c-

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