3.2.1.2 Structure of prokaryotic cells and of viruses

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9 Terms

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Murein

Makes up cell walls of prokaryotes and is a glycoprotein

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Prokaryote membrane organelles

they do not have any bound in the cytoplasm

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Prokaryote ribosomes

Smaller ribosomes (70S rather than 80S)

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Prokaryotic DNA

-Circular loop of DNA , free in cytoplasm and no histones

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plasmids

small loops of DNA

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Flagella

Used for locomotion in some prokaryotes

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Capsule

Surrounds a prokaryotic cell and prevents it from drying out

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Viruses are acellular and non living

Having no cellular structure and not a living organism

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Structure of a virus

-genetic material (DNA or RNA)

-protein capsid

-attachment protein

(protein coat)