Mycoplasma is a bacterial genus that lacks a cell wall that protects the cell membranes. They're the most basic self-replicating bacterium on the planet.
Mycoplasmas replicate by binary fission, however frequent cytoplasmic division may lag behind genome replication, resulting in multinucleate filament development.
Mycoplasma are naturally resistant to drugs that target cell wall synthesis because they lack cell walls.
Mycoplasma does not have a nucleus and other membrane-bound organelles.
Mycoplasma are pleomorphic organisms and pleomorphic organism are those that can change their shape.