Biochemistry Basics – 72274

What is the end product of catabolism of pyrimidine?

A. NH₃

B. CO₂ & H₂O

C. Both

D. None

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Correct Answer » B Explanation

The end products of pyrimidine catabolism are  CO₂ and H₂O.
Pyrimidines are ultimately catabolized (degraded) to CO₂, H₂O, and urea. Cytosine can be broken down to uracil, which can be further broken down to N-carbamoyl-β-alanine, and then to beta-alanine, CO₂, and ammonia by beta-ureidopropionase