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4 marksTransport Systems

CSEC Biology · January 2017 · Paper 2 · Question 5(b)

Chemotherapy destroys both malignant and good cells. Explain why a person undergoing chemotherapy would have decreased natural immunity.

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Other parts of this question

  1. 5(a)(i)Describe the pathway that blood takes as it flows into the heart from the lungs, until it is pumped out of the heart to be sent to the rest of the body.[4 marks]
  2. 5(a)(ii)Identify TWO physiological diseases that affect the circulatory system.[2 marks]
  3. 5(c)Suggest why he is given an antiserum injection instead of a vaccine.[5 marks]

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