2.2 Prokaryotic cells and viruses

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10 Terms

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Prokaryotic cell

Smaller cells with no membrane bound organelles

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Cell wall in prokaryotic cells

Physical outer barrier made of murein

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Capsule

Protective slimy layer

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Functions of the capsule

  • Helps the cell retain moisture

  • Adheres to surfaces


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Plasmids

Small circles of DNA that contain genes which may aid the survival of bacteria

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Loop of DNA

Contains the genetic information for the replication of bacterial cells

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Flagellum

Tail structure which rotates to move the cell

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Pilli

Hair like structures which attach to other bacterial cells

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Ribosomes

Site of translation, 70S in prokaryotes

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Mesosomes

Infoldings of the inner membrane which contain the enzymes for respiration