A-LevelBiologyCell membranes and transport9700/12 · May/June 2012 · Q161 Mark

The diagram shows the water potential of three adjacent plant cells. [Figure 16.1] In which directions will there be net movement of water by osmosis?

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.

ADiagram A showing arrows from -800kPa to -1200kPa, -1000kPa to -1200kPa, -800kPa to -1000kPa.

BDiagram B showing arrows from -1200kPa to -800kPa, -1200kPa to -1000kPa, -1000kPa to -800kPa.

CDiagram C showing arrows from -800kPa to -1000kPa, -1000kPa to -1200kPa, but not -800kPa to -1200kPa.

DDiagram D showing arrows from -800kPa to -1000kPa, -800kPa to -1200kPa, -1000kPa to -1200kPa.

✓ Correct answer

D: Diagram D showing arrows from -800kPa to -1000kPa, -800kPa to -1200kPa, -1000kPa to -1200kPa.

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Topic: Cell membranes and transport, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, May/June 2012 Paper 1 Variant 2, question 16.

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