CAIE A Level Biology 9700 · Immunity
A researcher is investigating a novel surface protein on a pathogenic bacterium. She wants to produce antibodies that specifically recognise this protein.
Outline how the molecular structure of an antibody allows it to bind specifically to the target antigen.
4 marks, so the mark scheme is looking for about 4 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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