Biology 0610 · IGCSE · Selection

Selection — practice question

The graph illustrates how the bacterium Escherichia coli became more or less resistant to two different antibiotics from 2005 to 2023. Which statement best describes the changes from 2005 to 2023?

  • ABetween 2010 and 2015, the percentage of bacteria resistant to antibiotic 2 increased by 6%.
  • BBetween 2011 and 2016, the percentage of bacteria resistant to antibiotic 1 continually increased.
  • CBetween 2016 and 2023, the percentage of bacteria resistant to antibiotic 2 continually decreased.
  • DBetween 2020 and 2022, the percentage of bacteria resistant to antibiotic 2 decreased.

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