Prokaryote Eukaryote One circular 。Paired chromosome,not in chromosomes,in a membrane nuclear membrane 。No histones 。Histones 。No organelles ·Organelles ·Peptidoglycan cell ·Polysaccharide cell walls walls ·Binary fission 。Mitotic spindle • One circular chromosome, not in a membrane • No histones • No organelles • Peptidoglycan cell walls • Binary fission Prokaryote Eukaryote • Paired chromosomes, in nuclear membrane • Histones • Organelles • Polysaccharide cell walls • Mitotic spindle