A) Cations into the cell to balance its uptake of chloride ions.
B) Chloride ions from the blood into the glomerular filtrate for excretion.
C) Chloride ions out of the cell to balance the release of hydrogen carbonate ions.
D) Chloride ions into the cell to balance its uptake of hydrogen carbonate ions.
Correct Answer: C
Solution :
[c] Most of the hydrogen carbonate ions formed in the' red blood cells diffuse out of the plasma along a concentration gradient and combine with sodium in the plasma to form sodium hydrogen carbonate. The loss of negatively-charged hydrogen carbonate ions leaves them with a more positive charge that is balanced by chloride ions diffusing into the red blood cells from the plasma.
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