Pathogens

As level mind map on pathogens - key terms

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  • Pathogens
    • Definition:  a disease causingmicro organism
    • For a microorganismto be considered a pathogen it must...
      • Gain entry to host
      • Colonise tissue of host
      • Resist defences of host
      • Damage host tissue
    • Bacteria, viruses and fungi
    • Gain entry by...
      • Gas exchange system
      • Digestive system
    • Prevent entry by...
      • Skin- layer of dead cells
      • Mucous layer covers gas exchange = traps pathogen
      • Stomach acid
      • production of enzymes break down pathogens
    • CAUSE DISEASE by....
      • Damaging host cell and tissue
        • Sheer number
        • Untitled
        • Break down membrane of host cell
      • Producing toxins
  • Gain entry by...
    • Gas exchange system
    • Digestive system

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