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Sci 6 Disease

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  • 2. What is the host in the context of diseases?
    The living thing that a parasite infects and lives on or in.
  • 10. How does mucus help the body defend against diseases?
    It traps germs in the nose and airways.
  • 19. What is good hygiene?
    Practices that keep ourselves and the things around us clean to prevent diseases.
  • 14. Why is it important to keep the kitchen and toilets clean?
    To prevent the spread of bacteria and fungi.
  • 17. What type of water is safe to drink to avoid diseases?
    Boiled water or water treated at water plants.
  • 12. What does stomach acid do to germs in food?
    It kills bacteria in the food we have eaten.
  • 16. Why is it important to cover wounds with a plaster?
    To prevent germs from entering the wound.
  • 11. How does the skin act as a defense against disease?
    It acts as a barrier to prevent germs from entering the body.
  • 1. What is a parasite?
    A living thing that lives on or in another living thing and causes harm.
  • 3. Name two diseases caused by bacteria.
    Cholera(霍乱) and pneumonia(肺炎).
  • 9. What do tears contain that helps kill bacteria?
    A chemical substance.
  • 8. Name two diseases caused by parasites.
    Malaria疟疾 and dysentery痢疾.
  • 4. Are all bacteria harmful?
    No
  • 20. Why should food not be left uncovered at room temperature?
    Because bacteria and fungi grow faster in warm conditions.
  • 13. Name two hygiene practices that can prevent diseases spread through food.
    Washing hands before eating and washing raw fruits and vegetables.
  • 5. Which type of living organism causes flu,chickenpox,and measles?
    Viruses.
  • 7. What is the role of yeast in making bread?
    It is a fungus that causes the dough to rise.
  • 6. Name two diseases caused by fungi.
    Ringworm and athlete’s foot.
  • 18. How can diseases be spread through air?
    By coughing or sneezing without covering the mouth or nose.