Cholera & Prokaryotic Cells

notes on Cholera, aqa AS Biology Unit 1

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  • Created by: Stephanie
  • Created on: 12-05-12 15:22

Cholera/Prokaryote structure

An example of a prokaryotic organism:

  • Has cell wall
  • Plasmids
  • Circular DNA (no nucleous)
  • 60s rather than 70s ribosomes
  • Flagellum for movement
  • Capsule (slime layer against immune system)
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How Cholera works

  • Produces a toxin when infected digestive system
  • Causes chloride ion protein channels in intestinal epithelium to open
  • Chloride ions diffuse into lumen, lowering the water potential
  • Water moves out of blood and into lumen by osmosis
  • Causes bad diorrheoa and dehydration
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