Question

The carbon dioxide is transported via blood to lungs mostly

• A. in combination with haemoglobin only
• B. dissolved in blood plasma
• C. in the form of bicarbonates
• D. as carbaminohaemoglobin.

Answer 1

The correct option is C in the form of bicarbonates

Carbon dioxide produced during cellular respiration is carried from tissues to lungs through blood in human beings by three different mechanisms. 70% of carbon dioxide is transported in the form of bicarbonates while 20-25% is transported as carbamino haemoglobin in RBC. Remaining around 7% of carbondioxide is transported in a dissolved state in plasma.
So, the correct answer is, 'in the form of bicarbonates'.