A student counted the cells in each stage of the cell cycle in a sample of root tip cells. The table shows the results. One complete cell cycle in these cells takes 20 hours. How long do these cells spend in stage 2?
Table: The number of cells in each of the three stages of the cell cycle in a sample of root tip cells
| Stage of the cell cycle | Number of cells |
|---|---|
| 1 | 150 |
| 2 | 30 |
| 3 | 20 |
2.0 hours
3.0 hours
6.7 hours
15.0 hours
63 exam-style questions on AQA GCSE Biology 1.2 Cell division, covering 1.2.1 Chromosomes, 1.2.2 Mitosis and the cell cycle, and 1.2.3 Stem cells. Each one has a worked solution and a mark scheme showing where the marks go.