<prompt> The daily production of hydrogen ions from CO2 is primarily buffered by which of the following?Extracellular bicarbonateRed blood 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 H2O - H2CO3 - H HCO3-At the tissues, CO2 diffuses into the red blood cells, where the enzyme carbonic anhydrase accelerates the above reaction.The H produced is buffered mainly by a large amount of hemoglobin in the red blood cells.Bicarbonate is not an effective buffer of volatile acid from CO2. 