The chemical reactions involved in respiration are virtually identical between prokaryotic and eukaryotic cells. In eukaryotic cells, ATP is synthesized primarily on the inner membrane of the mitochondria. In light of the endosymbiont theory for the evolutionary origin of mitochondria, where is most ATP synthesis likely to occur in prokaryotic cells?

Cells are capable of independent existence and can carry out all the functions which are necessary for the existence of the living being. Some of the functions that are performed by the cell include: Nutrition, Respiration, Excretion, Transportation, Reproduction.