|Cell Wall Absent||Shape: Pleomorphic|
|Life Cycle: Facultative Anaerobe|
- Mycoplasma are extremely small organisms which are bound only by an inner lipid membrane (See: Bacterial Cell Wall). Because they lack a rigid peptidoglycan layer, Mycoplasma do not have a particular shape and are thus considered "Pleomorphic".
- Because they do not contain a peptidoglycan layer, beta-lactam antibiotics are useless against Mycoplasma therapeutically. Instead, anti-ribosomal antibiotics such as erythromycin and doxycycline are used.