HideShow resource information
View mindmap
  • Pathogens
    • Microbes that cause infectious disease are called pathogens
    • There are 3 types of pathogens
      • Bacteria
      • Viruses
      • Fungi
      • Bacteria and viruses may reproduce rapidly inside the body and may produce toxins.
    • The body has different ways of protecting itself against pathogens
      • Tears contain an enzyme called lysozyme which destroys microbes
      • Sebaceous glands produce oils that help kill microbes
      • The stomach contains hydrochloric acid, which destroys microbes
      • White blood cells help to defend against pathogens by ingesting them or producing antibodies or antitoxins
      • The skin protects against physical damage and microbe infection
    • Drugs and mutations
      • Painkillers soothe the symptoms
      • Antibiotics damage bacteria and eventually kill them by interfering with their life processes
      • It is difficult to develop drugs that kill viruses without also harming the body's tissues
      • Pathogens mutate producing resistant strains such as MRSA
        • Antibiotics are taken and resistants MRSA survive
          • The surviving bacteria multiply and the only ones left are MRSA
  • Sebaceous glands produce oils that help kill microbes


No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Microbes and disease resources »