A-LevelBiologyTransport in plants9700/12 · May/June 2013 · Q271 Mark
The diagram shows how sucrose is loaded into a sieve tube element. [Figure 27.1] What type of transport is used to move the substances in steps 1, 2 and 3?
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.
Aactive transport active transport diffusion
Bactive transport facilitated diffusion diffusion
Cfacilitated diffusion active transport active transport
Dfacilitated diffusion facilitated diffusion active transport
✓ Correct answer
B: active transport facilitated diffusion diffusion
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