Question

Most of the carbon dioxide in blood is transported as

• A. carbamino-haemoglobin
• B. carbamino-protein
• C. bicarbonate
• D. dissolved carbon-dioxide

Answer 1

The correct option is C bicarbonate

Nearly 70 percent of carbon dioxide is transported as bicarbonate in the blood with the help of an enzyme carbonic anhydrase.
20-25 percent of carbon dioxide is transported by haemoglobin in RBCs as carbamino-haemoglobin.
Some amount of carbon dioxide is also carried in a dissolved state through plasma.