How Is the Bulk of Carbon Dioxide Transported in Blood

question 120

Multiple Choice

How is the bulk of carbon dioxide transported in blood?

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

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