A bacterial population initially contains 7.5 × 102 bacteria. The bacteria have enough nutrients throughout the investigation.
The mean division time changes during the investigation.
| Period | Duration | Mean division time |
|---|---|---|
| First period | 1 hour 30 minutes | 30 minutes |
| Second period | 2 hours | 20 minutes |
Calculate the bacterial population at the end of the second period.
Give your answer in standard form.
282 exam-style questions on AQA GCSE Biology 1.1 Cell structure, covering 1.1.1 Eukaryotes and prokaryotes, 1.1.2 Animal and plant cells, 1.1.3 Cell specialisation, 1.1.4 Cell differentiation, 1.1.5 Microscopy, and 1.1.6 Culturing microorganisms. Each one has a worked solution and a mark scheme showing where the marks go.