Diseases and immunity — Difficult
Transfer your understanding to a changed context, justify decisions and check your reasoning. No hints during the test.
Includes extension practice
Transmission, defences and active immunity after infection/vaccination are required. Antigen-shape mechanisms, memory-cell detail, passive immunity and cholera-toxin/osmotic-diarrhoea mechanisms add standalone-biology content.
Easy, Normal and Difficult describe practice demand; they are not the official Core and Extended tiers.
- Cambridge 0653 syllabus2028–2029 · B10.1.1–8
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