Biology 9700 · AS & A Level · Antibodies and vaccination

Antibodies and vaccination — practice question

Why does passive immunity persist for only a brief period?

  • AAntibodies are rapidly broken down.
  • BAntigens are rapidly broken down.
  • CMemory cells soon die.
  • DPhagocytes soon die.

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI