Why mitochondria and chloroplasts are reffered to as cell encaptured bacterium?
because duffers it originated as a cell encaptured bacterium and because the MRNA content in mito and chloroplasts is aruond 1 to 3 % therefore they cant synthesise some of their proteins so they are refferd as semi autonomous and if they could make all of their required proteins they would be called as fully autonomous or simply autonomous