Doctors measured the percentage of infections caused by bacteria that are resistant to an antibiotic. The table shows the results. Table
| Year | 2015 | 2017 | 2019 | 2021 |
|---|---|---|---|---|
| Percentage of infections caused by resistant bacteria | 5 | 9 | 16 | 24 |
| Which conclusion is supported by the data? |
The percentage of resistant bacteria increased in each year shown.
The antibiotic caused the bacteria to mutate more often each year.
All of the bacteria will be resistant to the antibiotic by 2023.
The number of people taking the antibiotic fell in each year shown.
122 exam-style questions on OCR GCSE Biology 5.2 Natural selection and evolution, covering 5.2.1 Genetic variation within a population, 5.2.2 Developments in classification systems, 5.2.3 How evolution occurs through natural selection, 5.2.4 Evolution as change over time, 5.2.5 Evidence for evolution, and 5.2.6 Darwin and Wallace. Each one has a worked solution and a mark scheme showing where the marks go.