What this practice covers
These questions are drawn from past CIE 9700 Biology papers and filtered to antibodies and vaccination. You answer, you find out immediately whether you were right, and you get the reasoning for the correct option and for each distractor. Wrong answers go to a mistakes locker so you can come back to exactly those.
Practice is free. You need an account only so your progress and your mistakes are still there next time.
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What examiners see students get wrong here
These are the errors that cost marks on antibodies and vaccination, taken from our own topic notes. Read them before you practise and you will recognise the traps in the questions.
- Saying antibodies kill pathogens. They agglutinate, neutralise and mark them; phagocytes and other mechanisms do the killing.
- Saying an antibody has one binding site. It has two, which is what makes agglutination possible.
- Calling breast milk antibodies active immunity. Antibodies received ready-made are passive.
- Saying a vaccine gives immediate protection. It takes days, because a primary response has to happen first.
- Saying myeloma cells are cultured to make the antibody. The hybridoma clone is; myeloma cells alone make nothing useful.
Revise it first
If any of the above is unfamiliar, work through the notes before practising: Antibodies and vaccination revision notes.