The structure of a bacterial cell is much simpler than the organization of a eukaryotic cell. Most bacteria have a murein cell wall (except for mycoplasmas), under which lies the plasma membrane. Special outgrowths of plasmolemma bacteria – mesosomes – are primitive organelles involved in the processes of cellular respiration. In photosynthetic bacteria, photosynthetic pigments, on which photosynthesis processes take place, are located in the folds and incisions of the plasma membrane. The bacterial cell is devoid of the endoplasmic reticulum, the ribosome lies freely in the cytoplasm. The genetic material is not organized in the form of a nucleus, but is represented by a ring DNA molecule freely located in the cytoplasm.
In their form, bacterial cells can be spherical – cocci, elongated – sticks, or bacilli, and crimped – spirillos
||prevents bacteria from drying out
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