A-LevelBiologyImmunityMay/June 2017Paper 1 Q401 Mark
What is the first response by the immune system to a pathogen?
Aingestion of the pathogen by phagocytes
Bproduction of antibodies
Cproduction of antigens
Dstimulation of B memory cells
✓ 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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