Biology 9700 · AS & A Level · Movement into and out of cells

Movement into and out of cells — practice question

The graph presents the findings from an osmosis test carried out with potato tissue. At what concentration of sodium chloride solution is the water potential the same as that of this potato tissue, and what is true about water movement at that point?

  • A$0.37\,\text{mol dm}^{-3}$ and no net movement of water
  • B$17\,\text{mol dm}^{-3}$ and net movement of water out of the potato tissue
  • C$0\,\text{mol dm}^{-3}$ and no net movement of water
  • D$0.9\,\text{mol dm}^{-3}$ and net movement of water into the potato tissue

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