Which Statement Is True

Multiple Choice

Which statement is true?

A) Hemoglobin transports O₂ but not CO₂.
B) The conversion of CO₂ and H₂O into carbonic acid proceeds most quickly in extracellular fluid.
C) The γ-globin chains of fetal hemoglobin have a higher affinity for 2,3-bisphosphoglyceric acid (BPG) than do the β-globin chains of adult hemoglobin.
D) The conversion of CO₂ and H₂O into carbonic acid proceeds very rapidly in red blood cells.
E) The conversion of CO₂ and H₂O into carbonic acid proceeds slowly in endothelial cells.