A-LevelBiologyCell membranes and transport9700/12 · May/June 2025 · Q191 Mark
The graph shows the results of an osmosis investigation using potato tissue. [Figure 19.1 (graph of percentage change in mass vs concentration of sodium chloride)] What is the concentration of sodium chloride solution that has the equivalent water potential to this potato tissue and what is correct about the movement of water at that point?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
A0.37 mol dm⁻³ and no net movement of water
B17 mol dm⁻³ and net movement of water out of the potato tissue
C0 mol dm⁻³ and no net movement of water
D0.9 mol dm⁻³ and net movement of water into the potato tissue
✓ Correct answer
A: 0.37 mol dm⁻³ and no net movement of water
Practise more questions on this topic
Oracle Prep sorts past-paper questions by topic, so you can drill Cell membranes and transport and see which topics are most likely to come up next.
Sign up free →