Haemoglobin Structure & Function — Practice
A 6-month-old infant is investigated for failure to thrive. Studies show that haemoglobin in the infant's residual fetal red cells binds 2,3-bisphosphoglycerate poorly. The functional consequence of this property of fetal haemoglobin is
AA left-shifted oxygen dissociation curve favouring placental oxygen uptake
BReduced oxygen-carrying capacity per gram of haemoglobin
CIncreased affinity of haemoglobin for carbon dioxide
DA right-shifted curve favouring oxygen unloading to tissues