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1.4 Transport across cell membranes

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Question 3
F

Red blood cells were placed in three different solutions, A, B and C, for 20 minutes.

The Figure shows the appearance of one red blood cell from each solution.

Figure

image

a.

Solution B has the same concentration as the cytoplasm of the red blood cell.

Explain why the red blood cell in solution B did not change shape.

[2]
b.

Explain why the red blood cell in solution A burst.

[3]
c.

Explain why the red blood cell in solution C became smaller.

[2]
Markscheme

1.4 Transport across cell membranes Questions

  1. GCSE
  2. /Biology
  3. /1.4 Transport across cell membranes

41 exam-style questions on Edexcel GCSE Biology 1.4 Transport across cell membranes, covering 1.4.1 Transport into and out of cells and 1.4.2 Percentage gain and loss in osmosis. Each one has a worked solution and a mark scheme showing where the marks go.

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