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The mitochondria is responsible for respiration, but glycolysis occurs in the cytoplasm of the cell. The Krebs cycle and electron transport both occur in the mitochondria of t â¦ he cell. Cellular aerobic respiration occurs within the mitochondria. Cellular respiration occurs in the mitochondria of a cell.
1 ATP synthesis   Mitochondria are important as the only site of aerobic respiration in the cell. Some respiration (glycolysis) takes place in the cytosol, yielding 2â¦ molecules of ATP per glucose molecule respired, but this is anaerobic.