B. False Content continues to rise as PCO2 rises above normal alveolar levels. C. False CO2 content is zero when PCO2 is zero. D. True Oxyhaemoglobin is a stronger acid than reduced haemoglobin; the liberated

H.ions drive the reaction HHCO3 → H2CO3 → CO2H2O. E. False This is shown by the oxygen dissociation curve, not the carbon dioxide dissoci-

ation curve.