A-LevelBiologyImmunityMay/June 2024Paper 1 Q391 Mark
Which statement about the properties of the antigen-binding sites in different antibody molecules is correct?
AThey are located on the light chains only.
BThey have a hinge region to give flexibility for different antigens.
CThey have binding sites for receptors on phagocytes.
DThey have variable amino acid sequences for different antigens.
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of immunity within the Biologysyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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