Which of the following major ions in the bloo | vedclass

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(C) The transport of $CO_2$ in the blood primarily occurs through the bicarbonate buffer system. When $CO_2$ diffuses into the red blood cells,it reac

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$Cl^-$

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(C) The transport of $CO_2$ in the blood primarily occurs through the bicarbonate buffer system. When $CO_2$ diffuses into the red blood cells,it reacts with water to form carbonic acid $(H_2CO_3)$,which dissociates into hydrogen ions $(H^+)$ and bicarbonate ions $(HCO_3^-)$. To maintain electrical neutrality as bicarbonate ions diffuse out of the red blood cells into the plasma,chloride ions $(Cl^-)$ diffuse from the plasma into the red blood cells. This phenomenon is known as the chloride shift or the Hamburger phenomenon,which is essential for the efficient transport of $CO_2$ as bicarbonate.

Which of the following major ions in the blood plays an important role in the transport of $CO_2$?

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