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7 marksTransport Systems

CSEC Biology · May/June 2013 · Paper 2 · Question 4(c)(i)

A student is about to travel to a country where yellow fever is rampant.

Explain how a vaccine can provide the student with active acquired immunity against this disease.

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Other parts of this question

  1. 4(a)Name TWO ways by which the human body prevents itself from becoming infected.[2 marks]
  2. 4(b)(i)Describe the life cycle of a named insect vector.[6 marks]
  3. 4(b)(ii)Explain how knowledge of the life cycle of this insect vector can be used to prevent the transmission of a named pathogenic disease.[6 marks]
  4. 4(c)(ii)Discuss why a vaccine that provides passive acquired immunity is NOT suitable for this student.[7 marks]

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