Communicable Disease

• What is a pathogen?

  A microorganism which enters the body and causes disease
• Do pathogens cause communicable or non-communicable diseases?

  Communicable diseases
• How large are bacteria compared to your body cells?

  Your body cells are 100 times bigger
• How do bacteria make you feel ill?

  They produce toxins that damage your cells and tissues
• How large are viruses compared to bacteria?

  Bacteria are 100 time larger
• Are viruses cells?

  No
• How do viruses make you feel ill?

  They live inside your cells and replicate themselves using the cell's machinery and eventually burst the cells
• Are protists eukaryotic or prokaryotic?

  Eukaryotic
• Are protists single-celled or multicellular?

  Single-celled
• What is a parasite?

  Microorganisms, usually protists, that live on or inside other organisms and can cause them damage
• What is a vector?

  An organism which carries a pathogen but doesn't get the disease form the pathogen
• Can fungi be single-celled or multicellular?

  Both
• What is the name for the thread-like structure which makes up the body of some fungi?

  Hyphae
• Are hyphae able to penetrate human skin and plant surfaces?

  Yes
• What do hyphae produce which spreads the fungus?


  Spores
• What ways can pathogens be spread?

  • By water
  • By air
  • By direct contact