Explain why there has been a large increase in antibiotic-resistant strains of bacteria.
An overuse of antibiotics means the non-resistant strains are killed, leaving less competition for the resistant-strains of bacteria, so they can mutate to reproduce more resistant strains of bacteria.
AM
Related Biology GCSE answers
All answers ▸Describe the stages used to produce a cloned mammal (5 marks)
Describe the differences in the structure of an artery, vein and capillary?Explain the functional use of their structures??
How do diffusion and osmosis work?
One form of muscle disease is caused by a mutant myosin allele. It prevents myosin from binding to other myosin molecules, thus preventing contraction. Suggest why.