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Resistant Bacteria (GCSE Biology)

The following is a GCSE Biology test covering 'Resistant Bacteria' from the broader topic Inheritance, Variation And Evolution. The test is geared towards the AQA exam board style syllabus.
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Which of these is NOT a common biochemical mechanism bacteria use to resist antibiotics?
Which approach is a focus for slowing the rise of antibiotic resistance globally?
What is the best description of “selection pressure” in the context of antibiotic use?
What is a likely fitness consequence for some resistant bacteria when antibiotics are absent?
Why might incomplete or inappropriate use of antibiotics contribute to resistance?
Why can use of broad-spectrum antibiotics be especially likely to promote antibiotic resistance?
Which bacterial mechanism confers resistance by producing an enzyme that breaks down penicillins?
Which bacterial process can package DNA into a bacteriophage and thereby transfer resistance genes between bacteria?
How does natural selection lead to antibiotic-resistant bacteria becoming common in a population?
Which definition best describes a “multidrug-resistant” (MDR) bacterium?
What role do biofilms play in antibiotic resistance?