A-LevelBiologyImmunityFeb/Mar 2025Paper 1 Q401 Mark
The HIV virus causes illness by infecting and destroying T-helper cells. This leads to AIDS and an inability to produce an effective immune response. Which components of the immune system are produced less effectively when AIDS develops? 1 memory cells 2 plasma cells 3 antibodies
A1, 2 and 3
B1 and 2 only
C1 and 3 only
D2 and 3 only
✓ Correct Answer
The correct answer is A. 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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