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NOTES ON WHY DO WE FALL ILL- CLASS 9 CBSE BIOLOGY

NOTES ON WHY DO WE FALL ILL

NOTES ON WHY DO WE FALL ILL
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 11. Which one of the following is not a viral disease?

  (a) Dengue

  (b) AIDS

  (c) Typhoid

  (d) Influenza

Ans. C

  12. Which one of the following is not a bacterial disease?

  (a) Cholera

  (b) Tuberculosis

  (c) Anthrax

  (d) Influenza

Ans. D

13. Which one of the following diseases is not transmitted by mosquitoes?

(a) Brain fever

(b) Malaria

(c) Typhoid

(d) Dengue

Ans. C

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14. Which one of the following diseases is caused by bacteria?

(a) Typhoid

(b) Anthrax

(c) Tuberculosis

(d) Malarial

Ans. D

15. Which one of the following diseases is caused by protozoans?

(a) Malaria

(b) Influenza

 (c) AIDS

(d) Cholera

Ans. A

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16. Which one of the following has a long term effect on the health of an individual?

(a) Common cold

(b) Chickenpox

(c) Chewing tobacco

(d) Stress

Ans. C

17. Which of the following can make you ill if you come in contact with an infected person?

(a) High blood pressure

(b) Genetic abnormalities

(c) Sneezing

(d) Blood cancer

Ans.  C

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18. AIDS cannot be transmitted by:

(a) Sexual contact

(b) Hugs

(c) Breast feeding

(d) Blood transfusion

Ans. B

19. Making anti-viral drugs is more difficult than making anti-bacterial medicines because:

(a) Viruses make use of host machinery

(b) Viruses are on the border line of living and non-living

 (c) Viruses have very few biochemical mechanisms of their own

(d) Viruses have a protein coat

Ans. C

20. Which one of the following causes kala-azar?

 (a) Ascaris

 (b) Trypanosoma

 (c) Leishmania

 (d) Bacteria

Ans. C

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