Bacteria are prokaryotes unicellular cells that live almost everywhere. They reproduce through a process known as binary fission. The cell walls of Bacteria, unlike the Archaea and the Eukarya, contain peptidoglycan. Bacteria are sensitive to some antibiotics but are resistant to most antibiotics that affect Eukarya.
Archaea are prokaryotic cells that can live in a very hot environment. The cells do not contain peptidoglycan. Archaea are not known to cause disease in humans or animals. They also have membranes that contains branched hydrocarbon.
Eukarya have eukaryotic cells .Unlike Bacteria and Archaea, they possess a nucleus. Not all Eukarya possess cells with