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A-LevelBiologyImmunity9700/12 · Oct/Nov 2011 · Q361 Mark

Why is passive immunity effective for only a short time?

Aantibodies are rapidly broken down
Bantigens are rapidly broken down
Cmemory cells soon die
Dphagocytes soon die

✓ Correct answer

A: antibodies are rapidly broken down

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About this question

Topic
Immunity, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source
A-Level Biology, Oct/Nov 2011 Paper 1 Variant 2, question 36.

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