The biological functions of carbonic anhydrase and carboxypeptidase A respectively are
Question and options
The biological functions of carbonic anhydrase and carboxypeptidase A respectively are
- gene regulation and hydrolysis of peptide
- interconversion of and bicarbonate, and hydrolysis of peptide
- gene regulation and interconversion of and bicarbonate
- None of the given options is correct
Answer and explanation
Correct answer: B - interconversion of \(\mathrm{CO_2}\) and bicarbonate, and hydrolysis of peptide
Carbonic anhydrase, a zinc enzyme, interconverts carbon dioxide and bicarbonate, while carboxypeptidase A, also zinc-dependent, hydrolyses the peptide bond at the C-terminal end of a protein. Neither enzyme regulates genes, so the pairings that include gene regulation are wrong, and since one pairing is correct the catch-all fails.
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