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1.3 Transport in cells

1.3 Transport in cells

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Question 14

An investigator measured the water potential of sweet potato (Ipomoea batatas) tissue by incubating uniform cylinders of the tuber in various concentrations of sodium chloride solution.

For one sweet potato cylinder incubated in a 0.2 mol dm−30.2\text{ mol dm}^{-3}0.2 mol dm−3 sodium chloride solution:

  • the initial mass was 4.50 g4.50\text{ g}4.50 g
  • the final mass was 5.13 g5.13\text{ g}5.13 g

Calculate the percentage increase in mass of this sweet potato cylinder.

Use the equation:

percentage increase in mass=increase in massstarting mass×100 \text{percentage increase in mass} = \frac{\text{increase in mass}}{\text{starting mass}} \times 100 percentage increase in mass=starting massincrease in mass​×100
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Markscheme

1.3 Transport in cells Questions

  1. GCSE
  2. /Biology
  3. /1.3 Transport in cells

30 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.

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