Some important questions of chapter- why do we fall ill?

  • penicillin is not effective against common cold. justify.
  • While going abroad why is it essential to get vaccinated against certain diseases?
  • Prevention is better than cure. Justify.
  • Name two diseases caused  by protozoa. Also mention the causative organisms.
  • Explain the basis of principle of treatment for any disease.
  • What are intrinsic and extrinsic factors which cause several diseases?  Give example of such diseases.
  • The immune system of hari is damaged by the attack of pathoge on his body —
  • a- name the disease he is suffering from?
  • b- name the pathogen that has attack his body.
  • c- mention any three modes of transmission of this disease.

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