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1.3 Transport in cells

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Question 7

A freshwater crab takes in oxygen from the water across exchange membranes in its gills.

Which change would reduce the rate of oxygen exchange?

[1]
A

Increase the blood supply to the exchange membrane

B

Increase the flow of water over the exchange membrane

C

Increase the thickness of the exchange membrane

D

Increase the surface area of the exchange membrane

Markscheme

1.3 Transport in cells Questions

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

140 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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