In eukaryotes; the cytosal (gycolysis) and the mitochondria (Krebbs or Citric Acid Cycle). The inner mitochondria membrane for the electron transport chain. Together these three make up the respiration. In prokaryotes: the cytosal
Chemical reactions in prokaryotic cells occur in the cytoplasm, which is the semi-fluid matrix inside the cell where many essential metabolic processes take place. Prokaryotic cells lack membrane-bound organelles, so most metabolic pathways are carried out in the cytoplasm.