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1.1 Cell structure

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Question 66

A scientist investigated the movement of three substances across the cell membrane of animal cells.

The scientist measured the concentration of each substance inside and outside the cells at the start and after 10 minutes.

SubstanceConcentration inside cells at start in mmol/dm³Concentration inside cells after 10 minutes in mmol/dm³Concentration outside cells at start in mmol/dm³Concentration outside cells after 10 minutes in mmol/dm³
P04106
Q001010
R8503

Using all three substances, explain what the results show about the cell membrane.

[3]
Markscheme

1.1 Cell structure Questions

  1. GCSE
  2. /Biology
  3. /1.1 Cell structure

282 exam-style questions on AQA GCSE Biology 1.1 Cell structure, covering 1.1.1 Eukaryotes and prokaryotes, 1.1.2 Animal and plant cells, 1.1.3 Cell specialisation, 1.1.4 Cell differentiation, 1.1.5 Microscopy, and 1.1.6 Culturing microorganisms. Each one has a worked solution and a mark scheme showing where the marks go.

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