A student compares two areas of skin containing the same number of cells.
Table
| Area | Cells dividing / % | Condition |
|---|---|---|
| P | 4 | undamaged |
| Q | 18 | healing cut |
Which statement best explains the difference?
Cells in Q divide to halve their chromosome number.
Cells in Q divide to produce genetically different cells.
Cells in Q divide to increase each cell's size.
Cells in Q divide to replace the damaged cells.
42 exam-style questions on Edexcel GCSE Biology 2.1 Cell division and growth, covering 2.1.1 Mitosis and the cell cycle, 2.1.2 Division producing identical daughter cells, 2.1.3 Cancer and uncontrolled cell division, 2.1.4 Growth in animals and plants, 2.1.5 Importance of cell differentiation, and 2.1.6 Percentile charts to monitor growth. Each one has a worked solution and a mark scheme showing where the marks go.