bacteria

• bacteria

  • small celled prokaryotes
  • no membrane bound organelles
  • smaller ribosomes
  • no nucleus, single circular chromosomes free in cytoplasm not associated with proteins
  • cell wall-peptidoglycan
  • plasmids, flagella,capsules,pilli
• tuberculosis(TB)


  cause: mycobacterium tuberculosis

  -infectious disease caused by bacteria and are transmissible
• transmission of TB

  1. infected person with TB coughs or sneezes, mycobacterium tuberculosis bacteria enters air in tiny liquid droplets
  2. one inside individuals lungs, TB engulfed by phagocytes- bacteria may still be able to S+R inside phagocytes
  3. overtime, infected phagocytes become encased in tubercles in lungs, bacteria is dormant
  4. possible for bacteria to be activated or overpower immune system when it is comprimised= develop TB(active phase)
  5. if not treated- extensive damage to lungs/respiratory failure