A-LevelBiologyImmunityMay/June 2018Paper 1 Q401 Mark
When an organ is transplanted from one person to another, rejection of the non-self organ must be avoided. At the same time, the immune system of the recipient must be maintained to prevent death from infections. What prevents rejection of the transplanted organ?
Acontinued activity of B-lymphocytes
Bnatural active immunity
Cnatural passive immunity
Dsuppression of T-lymphocyte activity
✓ Correct Answer
The correct answer is D. 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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