Figure 1: Schematic representation of cytoplasmic and mitochondrial bioenergetics.
The breakdown of glucose via glycolysis occurs in the cell cytoplasm and yield 2 ATP. The rest of the metabolism occurs in the mitochondria. The Krebs cycle produces 2ATP, and oxidative phosphorylation (respiratory chain) 28 ATP from the original glucose molecule. These are theoretical values since there is always some loss of energy due to various inefficiencies in the actual processes. L-Carnitinetranslocates free fatty acids into mitochondria for betaoxidation and a typical fatty acid like palmitatepalmitate yields 106 ATP.