Approximately seventy percent of carbon-dioxide absorbed by the blood will be transported to the lungs:

Approximately seventy percent of carbon-dioxide absorbed by the blood will be transported to the lungs:
  1. as bicarbonate ions
  2. in the form of dissolved gas molecules
  3. by binding to R.B.C
  4. as carbamino-haemoglobin

Solution

About 70% of CO2 is converted into bicarbonates inside RBCs in presence of an enzyme carbonic anhydrase. The bicarbonates are transported as salts of sodium and potassium in blood plasma as well as RBCs.

Asked in: NEET 2014

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