prokaryotic cell structure

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5 Terms

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typically contains

  • plasma membrane

  • cell wall

  • sometimes a capsule/ flagellum

  • plasmid

  • cytoplasm

  • ribosome

  • DNA as a loop

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different between eukaryotic and prokaryotic cells

  • prokaryotic cells are smaller

  • no membrane bound organelles

  • smaller ribosomes (70s)

  • no nucleus/DNA loop in cytoplasm

  • cell wall made from murein/glycoprotein

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may also contain

  • one or more plasmids

  • a capsule around cell

  • one or more flagella

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viruses definition

  • non living (no metabolic reactions, can’t move/respire/replicate, no nutrition)

  • acellular (not made of cells, no cell membrane)

  • viruses are smaller than bacteria and can only contain 3 structures

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virus structures and functions

  • genetic material: codes for viral protein

  • capsid: protein shell that protects genetic material/RNA/DNA

  • attachment protein: binds to receptors on host cells being infected