Typical bacteria are the common, well-known bacteria, while the atypical bacteria, also known as the incomplete bacteria. The typical bacteria are a member of the large group of unicellular microorganisms that have cell walls but lack organelles and an organized nucleus, including some which can cause disease while atypical bacteria are not detectable on gram stain and cannot be cultured using standard methods.
A typical bacterial size is around 0.5-0.8 cm, while atypical bacteria is about 0.1-0.3 cm. Atypical bacteria do not have a wall, while typical bacteria have a cell wall that is made up of peptidoglycan.
A typical bacterial reproduces through cell division, while atypical bacteria have complicated reproduction.
A typical bacterial as either a gram-positive or a gram-negative while atypical bacteria does not color with gram staining. A typical bacterium can be a mutualistic parasite or predators, while atypical bacteria are obligated to parasites.