CAPE Biology Unit 2 · 2014 · Paper 1 · Question Q24

From the graph, it can be deduced that

1. (A)at high partial pressures of carbon dioxide, the rate of release of oxygen from haemoglobin increases
2. (B)at low partial pressures of carbon dioxide, the rate of release of oxygen from haemoglobin increases
3. (C)at low partial pressures of oxygen, the rate of release of oxygen from haemoglobin decreases
4. (D)at high partial pressures of oxygen, the rate of release of oxygen from haemoglobin increases

This question uses a figure or table from the paper — you'll see it when you practise.