How Is the Bulk of Carbon Dioxide Carried in Blood

question 51

Multiple Choice

How is the bulk of carbon dioxide carried in blood?

• A) chemically combined with the amino acids of hemoglobin as carbaminohemoglobin in the red blood cells
• B) as the bicarbonate ion in the plasma after first entering the red blood cells
• C) as carbonic acid in the plasma
• D) chemically combined with the heme portion of hemoglobin

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