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