Stockton earned the old school tag for his physical play; surveys of athletes and fans alike often judged him among the toughest players in the NBA, usually just behind teammate Karl Malone. His patented short shorts became known as Stocktonsâsince he continued to wear the style long after the rest of the league had adopted a baggier look.
Animal cells never have cell walls. A plant cell does have a cell wall for support and protection. Animals have a cell membrane, which is composed of a phospholipid bilayer (made of polar, hydrophilic heads and nonpolar, hydrophobic tails) and do not have a cell wall. Animal cells never have cell walls.
While all bacterial cell walls (with a few exceptions e.g. extracellular parasites such as Mycoplasma) contain peptidoglycan, not all cell walls have the same overall structures. Since the cell wall is required for bacterial survival, but is absent in some eukaryotes, several antibiotics (notably the penicillins and cephalosporins) stop bacterial infections by interfering with cell wall synthesis, while having no effects on human cells which have no cell wall only a cell membrane. There are two main types of bacterial cell walls, those of gram-positive bacteria and those of gram-negative bacteria, which are differentiated by their Gram staining characteristics. For both these types of bacteria, particles of approximately 2 nm can pass through the peptidoglycan.