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Date November 2011 Marks available 1 Reference code 11N.1.HL.TZ0.32
Level Higher level Paper Paper 1 Time zone TZ0
Command term Question number 32 Adapted from N/A

Question

What occurs in the body after the injection of a vaccine containing antigens?

A. Activated B-cells divide to form memory cells.
B. The receiver of the vaccine develops passive immunity.
C. Helper T-cells produce specific antibodies.
D. Macrophages are cloned and destroy the antigen.

Markscheme

A

Examiners report

N/A

Syllabus sections

Additional higher level » Topic 11: Animal physiology » 11.1 Antibody production and vaccination
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