A-LevelBiologyImmunityFeb/Mar 2024Paper 1 Q391 Mark
Monoclonal antibodies are now being used to treat some human diseases. What explains why monoclonal antibodies are suitable for this purpose? 1 They can divide by mitosis to produce the large numbers of antibodies required for treatment. 2 They are specific to a particular antigen. 3 They can be modified so that they do not act as antigens themselves.
A1, 2 and 3
B1 only
C2 and 3 only
D2 only
✓ Correct Answer
The correct answer is C: 2 and 3 only
📋 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...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
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