Which of the following statements on oxygen storage/transport by globins is
correct? [2 marks]
a) Haemoglobin is essential for the storage of oxygen in erythrocytes
b) Myoglobin complex of alpha/beta subunits contains four haem
prosthetic groups
c) Binding of oxygen to haemoglobin is increased at low pH
levels
d) Carbon monoxide binds with higher efficiency to haemoglobin
than oxygen
e) Carbon dioxide increases the affinity of oxygen to
haemoglobin