AIIMS 2019 Botany Respiratory System MCQ Question
Assertion: 70 percent of CO₂ formed from catabolism is trapped as bicarbonate in the RBCs at the tissue level.
Reason: At tissue level, carbonic anhydrase in RBCs facilitates the formation of CO₂ and H₂O from bicarbonate.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
The assertion states a biological fact about CO₂ transport in the blood. During the process, most CO₂ is converted into bicarbonate ions in red blood cells, facilitated by the enzyme carbonic anhydrase, which is stated in the reason. Both statements are true, and the reason provides the correct explanation for the assertion.
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