Biology 5090 · O Level · Immunity

Immunity — practice question

(a)[7]

Explain how long-term active immunity is produced in the human body after a pathogen has infected it.

(b)[3]

Suggest factors that may cause differences in how well each person’s immune system responds to infections.

Worked solution & mark scheme

This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: “pathogens possess specific chemicals/proteins” …

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