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2 marksTransport Systems

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

The human body comes into contact with many pathogens. Some of these pathogens are spread by vectors.

Name TWO ways by which the human body prevents itself from becoming infected.

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Other parts of this question

  1. 4(b)(i)Describe the life cycle of a named insect vector.[6 marks]
  2. 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]
  3. 4(c)(i)Explain how a vaccine can provide the student with active acquired immunity against this disease.[7 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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