Bacteria are usually considered the mostprimitive type of cell there is, because theirstructure is simpler than most others. Many areimmobile, but others have flagella (thin hairsthat move like whips to propel the bacteria inliquid media). The cell wall is generally made upof carbohydrates, including murein, apeptidoglycan complex, lipids, and amino acids.No organelles or protoplasmic formations arefound in their cytoplasm.
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