Bacterial Cell Structure
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Bacteria are single-celled microorganisms between 0.2-2.0 μm in diameter that lack membrane-bound organelles. They have a gelatinous capsule surrounding a cell wall, and motile bacteria possess a flagellum to aid movement. Bacterial DNA is located in a circular chromosome that may be attached to the cell membrane via the mesosome, as well as smaller independent plasmids.
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Bacterial Cell Structure
- 3. Prokaryotae (Bacteria) 0.2 – 2.0 µm in diameter. Single celled micro-organisms No membrane bound organelles or functional cytoplasmic units such as centrioles
- 4. Prokaryotae (Bacteria) A gelatinous capsule , or glycocalyx , formed from polysaccharides, polypeptides or both, surrounds a cell wall . Motile bacteria have a flagellum
- 6. Prokaryotae (Bacteria) Additional thread like projections called pili assist in the adhesion of two bacteria and the exchange of genetic material.
- 7. Prokaryotae (Bacteria) Bacterial DNA found in two locations; in the circular chromosome which may be attached to the cell membrane by the mesosome , and in the much smaller unattached circular plasmids .
- 8. Prokaryotae (Bacteria) Ribosomes and inclusion granules may be found throughout the cytoplasm.