Cholera & Prokaryotic Cells

notes on Cholera, aqa AS Biology Unit 1

?
  • 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)
1 of 2

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
2 of 2

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Health, illness and disease resources »