If under certain conditions the P50 value of haemoglobin rises 100mm Hg, a person will die of oxygen deficiency the pigment
A. cannot load oxygen in the lungs
B. can load enough oxygen in the lungs but cannot unload it in tissues
C. can neither load nor unload oxygen
D. suffers degradation and cannot function normally
Answer:D
If under certain conditions the P50 value of haemoglobin rises 100mm Hg, a person will die of oxygen deficiency the pigment
A. cannot load oxygen in the lungs B. can load enough oxygen in the lungs but cannot unload it in tissues C. can neither load nor unload oxygen D. suffers degradation and cannot function normally