What is the main way that CO₂ is transported in the body?

What is the main way that CO₂ is transported in the body?
  1. As a dissolved gas in the blood
  2. As carbamino-haemoglobin
  3. As oxyhaemoglobin
  4. As bicarbonate (HCO₃)

Solution

Nearly 70 per cent of carbon dioxide is transported as bicarbonate (HCO₃) with the help of the enzyme carbonic anhydrase. 20-25 per cent of carbon dioxide is carried by hemoglobin as carbamino-hemoglobin.

Asked in: NCERT

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