The organelles of eukaryotic cells interact with each other to maintain homeostasis within the cell. The nucleus, endoplasmic reticulum, Golgi apparatus, chloroplasts, and mitochondria all contribute to protein transport, packaging, export, and energy harnessing. According to the endosymbiotic theory, certain organelles are proposed to have evolved from free-living bacteria that were engulfed by a larger cell. These organelles have multiple membranes, their own circular DNA, and can replicate by binary fission. The origin of which organelles are likely explained using the endosymbiotic theory?