Potato cylinders were left in four different solutions for 30 minutes. In which solution was the concentration closest to the concentration of the potato cell contents?
Table: The percentage change in mass of potato cylinders left in four different solutions for 30 minutes
| Solution | Percentage change in mass in % |
|---|---|
| W | +8 |
| X | +2 |
| Y | -1 |
| Z | -9 |
Solution W, because the cylinders gained the most mass
Solution X, because the cylinders gained the least mass
Solution Y, because the change in mass was closest to zero
Solution Z, because the cylinders lost the most mass
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.