(a(i))[1]
State the function performed by the cell labelled Y.
(a(ii))[2]
The red blood cell labelled in Fig. 5.1 is described as crenated because it has an abnormal, shrivelled appearance. Explain how this red blood cell has become crenated.
(b(i))[1]
Calculate the percentage increase in mean red blood cell count from population D to population A.
(b(ii))[4]
Describe the pattern in Table 5.1 and suggest explanations for it.
(c)[2]
Carbonic anhydrase is an enzyme found in red blood cells with a key role in the transport of respiratory gases. Explain why a non-competitive inhibitor of carbonic anhydrase will reduce the supply of oxygen to actively respiring tissues.