Biology 9700 · AS & A Level · Proteins

Proteins — practice question

Tetanus is caused by a bacterial infection. The graph shows the blood antibody concentration of two individuals. On day 0, person G was given antibodies against the tetanus toxin and person H was given the tetanus vaccine. What might happen if G and H were infected with tetanus bacteria on day 20?

  • ATetanus antibodies would not be produced in person G.
  • BAntibody production would peak after day 32 in person G.
  • CAntibody concentration would stay constant in person H.
  • DA second antibody peak would occur in person H that would be lower than the first peak.

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