Question

Which enzyme plays the role of a catalyst in CO2 fixation in C4 plants?

• A. Carbonic mutase
• B. Carbonic reductase
• C. Carbonic anhydrase
• D. Carbonic dehydrogenase

Answer 1

Answer:

C. Carbonic anhydrase

• Carbonic anhydrase is an enzyme, which plays the role of catalyst in the first CO2 fixation step of C4 pathway.

• It helps the CO2 molecule to bind to the active site of RuBisCO.