Chemistry energychanges

• Pathogen


  A micro-organism with the potential to cause harm in the form of (infectious) disease.

  
• Host


  An animal or plant in which a pathogen lives.

  
• Pandemic


  A type of epidemic that spreads through very large or global populations.

  
• Epidemic


  A wide-spread infection that quickly escalates within a population.

  
• Virus


  The smallest pathogen, made up of genetic material and proteins. This pathogen works by invading and replicating inside host cells.

  
• Bacteria


  A prokaryote that invades a host and causes illness by releasing harmful toxins.

  
• Fungi


  A single-cellular or multi-cellular eukaryotic organism. Prefers damp environments and helps break down organisms.

  
• Protist


  A microscopic single-cellular eukaryote that can invade host cells using a vector.

  
• Vector


  A living thing that can transmit a disease.

  
• Examples of viruses


  Influenza, Common Cold, Measles, Mumps, Rubella, Chicken Pox, TMV, Ebola and HIV.

  
• Examples of bacteria


  Food Poisoning, Whooping Cough, Typhoid, Salmonella, Gonorrhea, E. coli and Cholera.

  
• Examples of protists


  Malaria and Sleeping Sickness.

  
• Examples of fungi


  Athlete's Foot, Ringworm, Thrush and Rose Black Spot.

  
• Non-communicable disease


  A disease that cannot be spread from person to person. Examples include cancer and diabetes.

  
• Communicable disease


  A disease that can be spread from person to person. Examples include the common cold and gonorrhea.

  
• Risk factor


  A factor that can increase the likelihood of getting a disease.

  
• Airborne disease


  When a pathogen is transmitted by the air. This can be in the form of droplets, when a person sneezes.