A non-photosynthetic bacterial cell has a cell wall outside of its plasma (or cell) membrane. It may also have a capsule or slime layer outside of the wall. The contents of the cell include the semi-fluid cytoplasm and numerous small specks called ribosomes. Ribosomes are the sites of protein synthesis. The single circular chromosome is found in the nucleoid region. Motile bacteria may have long projections called flagella.

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