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A-LevelBiologyImmunity9700/12 · Oct/Nov 2023 · Q401 Mark

The diagram shows the simplified structure of an antibody. [Figure 40.1] Which statement is correct?

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AU and X allow the antibody to bind to two different antigens.
BV allows the antibody to be flexible to bind to two antigens.
CW can bind to one specific antigen.
DX can bind with a specific phagocyte receptor.

✓ Correct answer

B: V allows the antibody to be flexible to bind to two antigens.

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About this question

Topic
Immunity, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source
A-Level Biology, Oct/Nov 2023 Paper 1 Variant 2, question 40.

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