A-LevelBiologyImmunityMay/June 2025Paper 1 Q311 Mark
The diagrams show three types of blood cells, which are all drawn to the same scale. [Figure 31.1 (diagrams of three blood cells X, Y, Z, with nuclei labelled)] Which row shows the characteristics of the cells?
Aname of blood cell X: monocyte, engulfs pathogens by endocytosis: Y, each responds to one antigen: Z
Bname of blood cell X: monocyte, engulfs pathogens by endocytosis: Z, each responds to one antigen: Y
Cname of blood cell X: lymphocyte, engulfs pathogens by endocytosis: Y, each responds to one antigen: Z
Dname of blood cell X: lymphocyte, engulfs pathogens by endocytosis: Z, each responds to one antigen: Y
✓ Correct Answer
The correct answer is B. 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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