<prompt> The daily production of hydrogen ion from CO2 primarily buffered by which of the following?Extracellular bicarbonateRed bloed cell bicarbonateRed blood cell hemoglobinPlasma proteins  <response>: Aerobic metabolism produces 13,000 to 24,000 mmol CO2 per day.This yields close to that amount of H ions produced per day the reaction CO2 H20 - 7H2C03 H HCO-3.At the tissues, CO2 diffuses into the red blood cells, where the enzyme carbonic anhydrate accelerates the above reaction. The H produced is buffered mainly by the large amount of hemoglobin in the red blood cells. Bicarbonate is not an effective buffer of volatile acid from CO2. 