Class 11 · Breathing and Exchange of Gases

Carbonic Anhydrase Role in CO₂ Transport — NEET Biology

🔥 Predicted for NEET 2027
📖 NCERT Source

RBCs contain a very high concentration of the enzyme, carbonic anhydrase and minute quantities of the same is present in the plasma too. This enzyme facilitates the following reaction in both directions.

NCERT Biology · Class 11 · Chapter 14 · Paragraph 32
Why This May Be Tested in NEET 2027

Adjacent to a frequently-asked paragraph in the same chapter.

Practice This Concept
QuestionPredicted for NEET 2027

Assertion (A): 70% of CO₂ is carried as bicarbonate in plasma. Reason (R): Carbonic anhydrase is only present in plasma.

📖 Solution & NCERT Explanation
View solution & NCERT explanation

Correct answer: C A is true but R is false

Carbonic anhydrase is mainly present in RBCs, not plasma.

❓ Frequently Asked Questions
What does NCERT say about RBCs contain very high?
RBCs contain a very high concentration of the enzyme, carbonic anhydrase and minute quantities of the same is present in the plasma too. This enzyme facilitates the following reaction in both directions.
Has this concept appeared in NEET?
High probability for NEET 2027. Adjacent to a frequently-asked paragraph in the same chapter.
Which chapter is this from?
Breathing and Exchange of Gases, Class 11 NCERT Biology.

Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.

176/180
of the ReNEET 2026 paper (all subjects) was already in the MedicNEET question bank

MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.

176 of 180 ReNEET 2026 questions traced to MedicNEET17,000+ Biology questionsHindi + English
Free to start · Hindi + English · 43,000+ questions · NEET 2026 pattern
Related Concepts from Breathing and Exchange of Gases
📘Practice all 22 NEET PYQs from Breathing and Exchange of Gases🔍See full Breathing and Exchange of Gases PYQ Analysis