Question

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: During the transportation of gases, about 20-25 percent of $CO_2$ is carried by Haemoglobin as carbamino-haemoglobin.
Reason R: This binding is related to high p $CO_2$ and low p $O_2$ in tissues.
In the light of the above statements, choose the correct answer from the options given below

• A. A is true but R is false
• B. A is false but R is true
• C. Both A and R are true and R is the correct explanation of A.
• D. Both A and R are true but R is NOT the correct explanation of A.

Answer 1

Answer: (C)

Both A and R are true and R is the correct explanation of A.

Answer 2

Both Assertion A and Reason R are correct, and R is the correct explanation of A. About 20–25% of CO$_2$ is transported in the blood as carbaminohaemoglobin. The formation of carbaminohaemoglobin is favored by high pCO$_2$ and low pO$_2$, conditions that prevail in the tissues.