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All bacterial cells have these parts: DNA (not in nucleus) All bacterial cells have these parts: cytoplasm DNA (not in nucleus) All bacterial cells have these parts: ribosome cytoplasm DNA (not in nucleus) All bacterial cells have these parts: ribosome cytoplasm DNA (not in nucleus) Cell membrane All bacterial cells have these parts: ribosome cytoplasm DNA (not in nucleus) Cell wall Cell membrane Roles of the cell structures • DNA: holds genetic information. • Cytoplasm: (like jello) holds other structures in place. • Ribosomes: make proteins. Roles of the cell structures • Cell membrane: controls what enters and leaves the cell • Cell wall: determines the shape of the bacterium. Bacteria come in three shapes… • Spherical • Rod-shaped • Spiral How do bacteria move or “swim”? • Some have a whip-like structure called a flagellum (plural: flagella)
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