However, cannabis is more commonly known as the source of the marijuana drug, although the word marijuana applies both to the whole plant, and to the resin from it (although this is sometimes also called hashish).
Malate is oxidized to oxaloacetate, reducing NAD + to NADH 2 + . We are now back at the beginning of the Krebs Cycle. Because glycolysis produces two pyruvate molecules from one glucose, each glucose is processes through the kreb cycle twice. For each molecule of glucose, six NADH 2 + , two FADH 2, and two ATP.
Glycolysis is a metabolic process that yields ATP. You should note that an oxidation step, using NAD as the oxidizing agent, occurs in this metabolic sequence. Molecular oxygen is not used anywhere in this process and this is why glycolysis is described as an anaerobic process. Glycolysis can in fact occur in the presence of molecular oxygen, as is seen in the erythrocyte, but oxygen is not needed for this process and can not be used even if it is present. You will see that in this scheme lactate is the product of this route for the anaerobic use of glucose for ATP synthesis.