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1.3 Transport in cells

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Question 6

A fish takes in oxygen from water through its gills. Which feature of the gills gives them a large surface area for gas exchange?

[1]
A

Each gill filament is covered in many lamellae.

B

Water flows continually over the gill filaments.

C

Each lamella has a dense blood supply.

D

Blood in the lamellae flows opposite to the water.

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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