CAIE A Level Biology 9700 · Immunity
A new vaccine against Lymphovirus has been developed. It contains purified glycoprotein antigens from the viral surface. Outline how this vaccine provides long-term immunity. In your answer, refer to the molecular structure of antibodies and the nature of the immunity produced.
6 marks, so the mark scheme is looking for about 6 separate creditworthy points. Making the same point twice in different words earns it once.
Outline means: Give the main points briefly. Less detail than describe, but every key step has to be there. One short line per step, in order. The marks are for coverage, not depth.
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