A student measured the percentage change in mass of swede tissue placed in sucrose solutions.
| Concentration of sucrose solution in mol/dm³ | Percentage change in mass in % |
|---|---|
| 0.30 | +4.0 |
| 0.40 | −2.0 |
Assume that the percentage change in mass varies linearly between the two concentrations shown.
Calculate an estimate of the concentration of the swede cell contents.
Show your working.
A sample of the same swede tissue is placed in a 0.45 mol/dm³ sucrose solution.
Explain what will happen to the mass of the tissue.
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.