Question

During the transportation gases, to maintain the ionic balance chloride ions shifts from

• A. RBC's to plasma
• B. Plasma to RBC
• C. Lungs to blood
• D. Blood to lungs

Answer 1

The correct option is B Plasma to RBC

• The carbon dioxide is taken up by RBC combines with the water to form bicarbonate in the presence of an enzyme known as carbonic anhydrase.
• The bicarbonate further dissociates into hydrogen ions and carbonate ions. The membrane of RBC is permeable to bicarbonate ions so it leaves the RBC and moves to the blood plasma.
• In order to maintain homeostasis, the chloride ions move from the blood to the RBC. This process is known as the chloride shift.

So, the correct answer is option B.