1.3 recall the term ‘pathogen’ and know that pathogens may be fungi, bacteria, protoctists or viruses.

  • Pathogen definition –  Microorganisms that cause disease
  • Pathogens can be: viruses, bacteria, fungi and protoctists

 

  • Bacteria releases toxins
  • Viruses damage cells
  • Or body counteracts pathogens by white blood cells in the immune system
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