Which of the following chemical equations shows what happens to part of the CO2 picked up by blood in tissues?
a) H+ + HCO3- ? H2CO3? CO2 + H2O
b) CO2 + H2O ? H2CO3- ? H+ + HCO3-
c) CO2 + H2CO3- ? H+ + HCO3-
d) CO2 + H2O ? HCO3-
Answer: b) CO2 + H2O ? H2CO3- ? H+ + HCO3-
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