Question

Which of the following is correct?

• A. The H⁺ released from carbonic acid combines with haemoglobin to form haemoglobinic acid.
• B. Oxyhaemoglobin of erythrocytes is alkaline.
• C. More than 70% of carbon dioxide is transferred from tissues to the lungs in the form of carbamino compounds.
• D. In a healthy person, the haemoglobin content is more than 25 gm per 100 mL.

Answer 1

Answer: (A)

Haemoglobinic acid is a very weak acid formed inside the red blood cells when hydrogen ions produced by the dissociation of carbonic acid combine with the haemoglobin.