Which of the following reactions prevails in red blood cells traveling through alveolar capillaries? (Hb = hemoglobin)
A) Hb + 4 O2 ? Hb(O2)4
B) Hb(O2)4 ? Hb + 4 O2
C) CO2 + H2O ? H2CO3
D) H2CO3 ? H+ + HCO3-
E) Hb + 4 CO2 ? Hb(CO2)4
Answer: A
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