Most eukaryotic cells today would less likely have no
mitochondria and other organelles because endosymbiosis did not occur. Endosymbiosis
theory posits that organelle such as the mitochondria, which originally was a
bacterium, was engulfed by the cell and instead of being digested turned to
generate ATP and other important component for cellular processes. This advantage
prolifically created the cell to become more efficient and high-powered
organism which enabled for other processes such as communication and
organization with other similar cells.
