A-LevelBiologySelection and evolutionMay/June 2020Paper 1 Q371 Mark
Which statement about the development of resistance to antibiotics in bacteria is correct?
AAll mutations in bacteria result in resistance to antibiotics.
BAntibiotics increase the rate of mutation in bacteria.
CMutations leading to antibiotic resistance only occur when antibiotics are used to treat pathogenic bacteria.
DThe proportion of antibiotic-resistant bacteria in a population only increases if the antibiotic is used.
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of selection and evolution 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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