A-LevelBiologyTransport in mammals9700/12 · Feb/Mar 2021 · Q301 Mark
The diagram shows a capillary, some tissue cells and a lymph vessel. [Diagram showing capillary, tissue cells, lymph vessel and arrows labeled 1, 2, 3, 4] Which row correctly identifies arrows 1, 2, 3 and 4?
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.
A1: diffusion of glucose
2: flow of water and small solutes
3: diffusion of carbon dioxide
4: flow of tissue fluid
B1: diffusion of glucose
2: flow of water and plasma proteins
3: osmosis of water
4: diffusion of oxygen
C1: diffusion of oxygen
2: flow of water and small solutes
3: diffusion of carbon dioxide
4: flow of tissue fluid
D1: diffusion of oxygen
2: flow of water and plasma proteins
3: osmosis of water
4: diffusion of carbon dioxide
✓ Correct answer
C: 1: diffusion of oxygen 2: flow of water and small solutes 3: diffusion of carbon dioxide 4: flow of tissue fluid
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