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