A scientist estimated the number of bacterial cells in a colony growing on nutrient agar. The mean division time remained constant during the investigation.
| Time after first estimate | Estimated number of bacterial cells |
|---|---|
| 0 hours | 1 500 |
| 3 hours | 48 000 |
Calculate the number of divisions that occurred during the first 3 hours.
Predict the number of bacterial cells in the colony 4 hours and 12 minutes after the first estimate.
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.