Infection and Response

• What are non - communicable diseases?

  Diseases caused from inside your body e.g cancer
• What are communicable diseases?

  Diseases caused by a pathogen etc. chicken pox
• What are pathogens?

  Disease-causing microorganisms.
• What are viruses?

  Reproduce by inserting genes into cells to make more copies e.g measles
• What is bacteria?

  Release toxins into your body that damage cells e.g salmonella
• What is fungi?

  They damage cells by using protists

  e.g malaria
• 2 examples of plant disease

  Rose black spot (fungus) - causes leaves to fall off

  Tobacco mosaic virus-discolours leaves has less chlorophyll
• What is a barrier to infection?

  Skin
• What are lymphocytes?


  White blood cells that neutralise toxins made by pathogens
• What are phagocytes?

  White blood cells that engulf and destroy pathogens.
• What is a vaccine?

  An injection of a dead version of your virus to help you gain back immunity without becoming ill
• What do antibiotics do?

  Kill bacteria e.g aspirin
• What are synthetic drugs tested on before humans?

  Cells tissue and animals