cellular respiration is not confined solely to the mitochondria. The initial stage, glycolysis, occurs in the cytoplasm of the cell and is present in all living organisms. Only the subsequent steps (Krebs' cycle and Electron Transport System) in eukaryotes take place within the mitochondria. Therefore, the statement that the 'entire' cellular respiration takes place in mitochondria is incorrect. The other statements are factually correct definitions and descriptions found in the text.