Glycolysis- cytoplasm. Glycolysis is a series that breaks down sugar into smaller units and it takes place in the cytoplasm. The first stage of fermentation and aerobic respiration. Citric acid cycle- mitochondria. Citric acid referred to a set of reaction which takes place in the mitochondria and its work is to extract energy from food. Electron transport - mitochondria. Electron transport referred to as the process which takes place in the mitochondrion and its work is to produce the bulk of ATP during the time of aerobic respiration, and it is also the third stage of aerobic respiration.</span>
Glycolysis is the process wherein glucose (from the diet) is broken down to two molecules of pyruvate through a 10-step enzymatic reaction. This reaction occurs in the cell's cytoplasm or cell body. Once pyruvate is formed, the pyruvate dehydrogenase complex, an enzyme complex responsible for converting pyruvate into acetyl-CoA.
Acetyl-CoA will then be transported to the mitochondria and it will cycle through series of reduction-oxidation reactions in the Kreb's cycle (also known as the tricarboxylic acid cycle or the citric acid cycle). Various reducing compounds (NADH and FADH2) are formed and these reducing compounds are oxidized, still, in the mitocondria in the electron transport chain producing ATP via oxidative phosphorylation.
