Bulk of carbon-dioxide released from body tissues into the blood is present as
Free in blood plasma
Bicarbonate in blood plasma and RBCs
Carbamino-haemoglobin in RBCs
carbamino-haemoglobin and as bicarbonate
Bicarbonate in blood plasma and RBCs
The correct option is B
Explanation of the correct option:
Explanation of the incorrect options:
Option A:
The gases cannot be transferred independently inside the body, thus requires a carrier for transportation.
Option C:
Carbaminohemoglobin is a compound of hemoglobin and carbon dioxide and is one of the forms in which carbon dioxide exists in the blood. But not that abundant.
Option D:
carbamino-hemoglobin and as bicarbonate is carried by blood but in bulk, bicarbonate is formed from in tissue.
Final Answer: Bulk of carbon-dioxide released from body tissues into the blood is present as Bicarbonate in blood plasma and RBCs.