本题目来源于试卷: SL Topic C3.2 Defence against disease，类别为 IB生物学
[单选题]
2. Which of the following proces9u2e mq865fyv8luov g sek r2 jlv5f5v)is occur in B-cells on infection of a human by a v )5lik 25vjrfpathogen?
I They are activated by contact with a helper T-cell.
II They are activated by contact with an antigen.
III They can differentiate to produce antibodies.
IV They divide rapidly by mitosis.
A. I III and IV only
B. All of the above
C. I, II and III only
D. I and II only
参考答案: B
本题详细解析:
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