B. This is an ancient metabolic pathway probably used 3.5 million years ago by the earliest known bacteria. This was prior to the presence of large amount of O2 in the atmosphere. C. Glucose is broken down via a series of 10 reactions to yield two molecules of pyruvate. Oxidation via the tricarboxlyic acid cycle to CO2 and H2O Glycolysis is the first stage of going from glucose to CO2 and H2O in aerobic organisms.
Glycolysis takes place via phosphorylated intermediates.
There are 9. Minor metabolic control reaction, G6P is allosteric inhibitor of hexokinase. In anaerobic tissues NADH cannot be reoxidized unless pyruvate is converted to lactate.