Sugars are shown coming into the cell and connects to a box labeled glycolysis. Three arrows come out of the glycolysis box, one labeled NADH connects to a box labeled electron transport chain. A second arrow from glycolysis is labeled pyruvate and points to a cycle diagram labeled citric acid cycle cycle. A third arrow points to a shape labeled ATP. The citric acid cycle diagram has three arrows coming out of it: one points to ATP, one points to CO2, and the third is labeled NADH and points to the electron transport chain box. The electron transfer chain box has the two NADH arrows coming into it as well as an arrow from oxygen. Two arrows come out of the box, one pointing to H2O and one pointing to ATP. All the elements of respiration are inside a cell and the citric acid cycle and electron transport change are shown inside of a shape labeled mitochondrian.