A-LevelBiologyInfectious diseasesOct/Nov 2023Paper 1 Q381 Mark
A patient has had repeated infections from the same pathogen over a few months. The patient has been treated with the same antibiotic on each occasion. Which treatment could prevent an increase in the antibiotic resistance of the pathogen?
Anarrow spectrum antibiotic to treat a non-cellular pathogen
Brepeat prescription for the same antibiotic at a higher dose
Cspecific antibiotic after testing for the pathogen
Dwide spectrum antibiotic to treat different strains of the pathogen
✓ Correct Answer
The correct answer is C: specific antibiotic after testing for the pathogen
📋 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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