CAPE Biology Unit 2 · 2016 · Paper 2 · Question 2(a)(ii)

Table 1 provides data on the percentage saturation of adult human haemoglobin with oxygen at different partial pressures of oxygen.

With reference to the shape of the plotted graph, describe the observed changes in oxygen uptake by haemoglobin as oxygen concentration increases.

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