A-LevelBiologyImmunityOct/Nov 2020Paper 1 Q391 Mark
Rabies is usually a fatal disease. Rabies is transmitted to people in the saliva of infected animals. A person who has been bitten by an infected animal needs immediate treatment. The treatment is a vaccination against rabies and an injection containing antibodies to the rabies antigen. What type of immunity is given by the injection of antibodies?
Aartificial active
Bartificial passive
Cnatural active
Dnatural passive
✓ Correct Answer
The correct answer is B: artificial passive
📋 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...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
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