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A-LevelBiologyInfectious diseasesMay/June 2025Paper 2 Q412 Marks

Tuberculosis (TB) is an infectious disease that is caused by a bacterial pathogen. The pathogen has mechanisms to avoid digestion by phagocytes. Macrophages may engulf the bacteria, but in some cases the bacteria remain alive within the cells instead of being killed.

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The correct answer is . This question tests the candidate's understanding of infectious diseases within the Biologysyllabus. The examiner's mark scheme requires...

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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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About This A-Level Biology Question

This structured question appeared in the Cambridge A-Level Biology (9700) May/June 2025 examination, Paper 2 Variant 2. It tests the topic of Infectious diseases and is worth 12 marks.

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