CAIE A Level Biology 9700 · Immunity

Immunity: compare question

Compare5 marksStandard

A patient is suspected of having a bacterial infection. A diagnostic test uses monoclonal antibodies specific to a bacterial surface protein to detect the pathogen in the patient's blood sample. The patient is then vaccinated with an inactivated toxin from the bacterium. A few weeks later, the patient is given an injection of monoclonal antibodies against the same toxin to provide immediate protection.

Compare the type of immunity provided by the vaccine and by the injection of monoclonal antibodies.

0 words · 5 marks

No account needed for your first marks. Your answer is used only to mark it.

How this question is marked

5 marks, so the mark scheme is looking for about 5 separate creditworthy points. Making the same point twice in different words earns it once.

Compare means: Give similarities or differences between two things, and say which side each point belongs to. Write each point as a pair, for example: A is X, whereas B is Y. Two separate descriptions rarely earn the marks.

More Immunity questions

All Immunity questions

Written by Markquill to follow the Cambridge International syllabus. Markquill is independent and is not affiliated with or endorsed by Cambridge International.