A student placed equal-sized strips of celery tissue in two different solutions. The student measured the mass of each strip before and after 30 minutes.
| Solution around celery strip | Mass at start (g) | Mass after 30 minutes (g) |
|---|---|---|
| Dilute | 4.0 | 4.6 |
| Concentrated | 4.0 | 3.3 |
Calculate the change in mass of each strip and explain the changes.
140 exam-style questions on AQA GCSE Biology 1.3 Transport in cells, covering 1.3.1 Diffusion, 1.3.2 Osmosis, and 1.3.3 Active transport. Each one has a worked solution and a mark scheme showing where the marks go.