A-LevelBiologyCell membranes and transport9700/12 · May/June 2023 · Q181 Mark

A student measured the time taken for complete diffusion of a dye into agar blocks of different sizes which were suspended in the dye. The results are shown. [Figure 18.1] What is the predicted time for complete diffusion of the dye into the agar block measuring 5 mm x 10 mm x 15 mm?

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.

A6.2 s

B16.1 s

C34.5 s

Dmore than 34.5 s

✓ Correct answer

A: 6.2 s

Oracle Prep sorts past-paper questions by topic, so you can drill Cell membranes and transport and see which topics are most likely to come up next.

Topic: Cell membranes and transport, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, May/June 2023 Paper 1 Variant 2, question 18.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content