Q:

Which of the following mechanisms results in acid being excreted from the body

0

Which of the following mechanisms results in acid being excreted from the

body?


  1. breathing out H2PO4 - (dihydrogen-phosphate) from the lungs
  2. excreting HCO3 - in the urine
  3. excreting NH3 (ammonia) in the urine
  4. breathing out CO2 from the lungs

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D: As CO2 exhaled from the lungs, carbonic acid in the blood converts

into carbon dioxide and water. So as carbon dioxide is exhaled, the amount

of carbonic acid within the body decreases.

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