Quelpr
6 marksDiseases

CSEC Biology · May/June 2010 · Paper 2 · Question 4(b)(i)

Some sexually transmitted infections are caused by viruses and have been found to be without cure. Explain why viral infections are usually very difficult, if not impossible, to cure.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 4(a)(i)Identify, with the aid of diagrams, the main stages in the life history of a named insect vector of disease.[9 marks]
  2. 4(a)(ii)Explain how EACH stage in the life history of the insect you identified at (a)(i) might be controlled to keep the vector population in check.[9 marks]
  3. 4(b)(ii)Apart from the nature of the AIDS virus, what OTHER factors make the control of this disease very difficult?[6 marks]

More practice: the rest of this paper · more Diseases questions · all CSEC Biology past papers