Water acts as an acid-base buffer in the blood by combining

Water acts as an acid-base buffer in the blood by combining with carbon dioxide and forming
A.  hypochlorate to lower the pH.
B.  hydrochloric acid to raise the pH. 
C.  bicarbonate to raise the pH.
D.  carbonic acid to lower the pH.


The sodium and potassium pump helps maintain fluid balance by
A.  transporting sodium to the outside of the cell.
B.  moving potassium out of the cell.
C.  excreting toxic ions from extracellular fluid.
D.  maintaining high levels of potassium in plasma.


Maintaining a very high-protein diet is a risk factor for dehydration because
A.  protein-rich foods generally contain less water than other types of foods.
B.  protein digestion leads to a significant loss of water in the intestines.
C.  the liver combines proteins with phospholipids and water for excretion through the skin.
D.  the kidneys need water to eliminate the excess urea in the urine.