Answered

The net result of excretion of H+ in the urine is the ____ within the blood.

A. retention of H2PO4-
B. conversion of CO2 to H2CO3
C. conversion of CO2 to HCO3-
D. retention of Na+

Answer :

Diatonic254

B

The net result of excretion of H+ in the urine is the __conversion of CO₂ to H₂CO₃__ within the blood.

Explanation:

Excretion of H+ ions from the blood via urine means decreasing the H+ content in the blood. This consequently means the blood pH rises ad becomes more basic (remember H+ ions are responsible for acidity for a solution). For the body to maintain the homeostatic pH of between 7.35 and 7.45, the carbonic anhydrase activity will increase hence dissolving more CO₂ into the blood plasma to form carbonic acid (H₂CO₃). Carbonic acid dissociated fast into H⁺ and HCO₃⁻. The H+ from the dissociation replenishes the H⁺ to the right concentration.  

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