The correct option is D All of these
Glycolysis occurs in all living cells. It is the process by which one molecule of glucose is converted into two molecules of pyruvate. Through this process, the 'high energy' molecules, ATP and NADH are synthesised. 4 molecules of ATP are synthesised and 2 ATP molecules are utilised in the initial stages of glycolysis. Hence, the net gain of ATP is 2. The pyruvate molecules then proceed to the link reaction, where acetyl-coA is produced.