Biology 3.10 Cholera

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  • Created by: Anna
  • Created on: 20-04-13 21:20

Cholera = disease caused by curved, rod-shaped bacterium called Vibrio Cholerae.

Prokaryotic cells vs Eukaryotic cells

  • P = no true nucleus with no nuclear envelope / E = Distinct nucleus.
  • P = no nucleolus / E = nucleolus.
  • P = circular strands of DNA but no chromosomes / E = chromosomes with DNA present.
  • P = no membrane bound organelles / E = membrane bound organelles e.g. mitochondria.
  • P = No chloroplasts / E = Chloroplasts in plants and algae
  • P = Small ribosomes / E = larger ribosomes.
  • P = No ER or Golgi apparatus and lysosomes / E = lysosomes, golgi and ER
  • P = cell wall made of peptidoglycan / E = cell wall mostly made of cellulose but only in plants.

Roles of structure in bacterial cell

  • Cell wall = physical barrier against mechanical damage, excludes certain subbies.
  • Capsule = protects bacterium from other cells, helps groups of bacterial stick together for protection (on outside of cell wall).
  • Cell-surface membrane = inside cell wall, permeable layer, controls entry and exit of chemicals.
  • Flagellum - aids movement.
  • Circular DNA = possesses genetic info for…

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