The table shows results from an osmosis investigation. Identical potato cylinders were left in each solution for the same time.
Table
| Sugar concentration / mol dm−3\text{mol dm}^{-3}mol dm−3 | Mean percentage change in mass / %\%% |
|---|---|
| 0.1 | +12 |
| 0.2 | +5 |
| 0.3 | -3 |
| 0.4 | -11 |
Between which concentrations would there be no net movement of water into or out of the potato cells?
between 0.00.00.0 and 0.1 mol dm−30.1\ \text{mol dm}^{-3}0.1 mol dm−3
between 0.10.10.1 and 0.2 mol dm−30.2\ \text{mol dm}^{-3}0.2 mol dm−3
between 0.30.30.3 and 0.4 mol dm−30.4\ \text{mol dm}^{-3}0.4 mol dm−3
between 0.20.20.2 and 0.3 mol dm−30.3\ \text{mol dm}^{-3}0.3 mol dm−3
41 exam-style questions on Edexcel GCSE Biology 1.4 Transport across cell membranes, covering 1.4.1 Transport into and out of cells and 1.4.2 Percentage gain and loss in osmosis. Each one has a worked solution and a mark scheme showing where the marks go.