Topic 6 - Cause of death (bacteria and viruses)

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Match the names of bacterial structures to their description.

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Cell wall

Pilus

Ribosomes

Plasmids

Mesosome

Flagellum

Capsule

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Protein tubes allowing bacteria to attach to surfaces. Involved in cell to cell attachment.

Site of protein synthesis. Occur free in cytoplasm.

Used for cell movement.

Small circles/loops of DNA.

Made of polysaccharides cross-linked with peptide chains(peptidoglycan). Gram-negative have thinner walls.

Mucus layer for protection and to prevent dehydration. Allows bacteria to form colonies.

Infolding of the cell surface membrane and site of respiration.


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