Which statement regarding carbon dioxide transport in the blood is true?
A) The chloride shift occurs when Cl⁻ moves out of RBCs in exchange for HCO₃⁻.
B) HCO₃⁻ dissociates into CO₂ and O₂.
C) 25% is converted to H₂CO₃ by carbonic anhydrase.
D) H₂CO₃ dissociates into H⁺ and HCO₃⁻.
E) 93% remains dissolved in plasma as CO₂.

Question

Quizplus · Accepted Answer

H₂CO₃ (carbonic acid) dissociates into H⁺ (hydrogen ions) and HCO₃⁻ (bicarbonate ions) in the blood, which is a key step in carbon dioxide transport.

Which Statement Regarding Carbon Dioxide Transport in the Blood Is