Infection and responce

• Name the system in the body that is damaged by HIV?

  immune system
• What are two ways the spread of malaria can be controlled

  • vaccinations
  • insect sprays
• What are the symptoms of a gonorrhoea infection?

  thick, yellow green discharge
• What is a pathogen?

  Microorganisms that cause communicable disease
• How is measles spread?

  droplets from an infected persons sneeze or cough
• How can the spread of salmonella be controlled?

  chickens can be vaccinated against it
• How do White Blood Cells defend against pathogens?

  • engolf unwelcome microorganisms
  • produce antibodies
  • produce antitoxins
• Ways a disease can be spread from person to person

  • sneeze
  • cough
  • airborne
  • poor hygiene
  • contact
  • consumption
  • weak immune system
  • water
  • vector
• What are toxins?

  a natural poison produced by invading pathogens
• What is immunity?

  when a person has resistance against the disease
• How to calculate magnification?

  image size (with ruler) / actual size