A scientist placed animal cells in a large volume of solution.
The table shows the scientist's results.
| Time in solution in minutes | Solute concentration of surrounding solution in mol/dm3\text{mol/dm}^3mol/dm3 | Mean solute concentration of cell contents in mol/dm3\text{mol/dm}^3mol/dm3 | Mean cell volume in μm3\mu\text{m}^3μm3 |
|---|---|---|---|
| 0 | 0.10 | 0.30 | 1800 |
| 10 | 0.10 | 0.25 | 2160 |
Calculate the percentage increase in mean cell volume during the 10 minutes.
Give your answer to 3 significant figures.
Explain why the mean cell volume increased and why this increase did not require energy from respiration.
State whether the mean cell volume would continue to increase just after 10 minutes. Explain your answer using the data.
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.