Plant and bacterial cells have a cell wall made of different material. Plant cell walls are primarily made of cellulose whereas bacterial cell walls are made of peptidoglycan. Animal cells lack cell walls.Animal and plant cells are eukaryotic. They have an organised nucleus where their genetic information is stored. Plant and animal cells have their genetic material organised in linear chromosomes. Bacteria lack a true organised nucleus and will have a single circular chromosone. Some bacteria will also have additional genetic material carried in smaller circular fragments called plasmids. Animal and plant cells have specialised sub-cellular compartments called organelles that carry out specific functions, often separated from the cytoplasm by membranes. Bacteria lack organelles and specialised functions are limited to invaginations of their cell membrane.