Q. Nucleotide breakdown releases purines and pyrimidines. Which of the following is NOT their subsequent fate? (Solved)
1. re-used to form nucleosides, nucleotides and nucleic acids
2. excreted unchanged in urine
3. directly enter the urea cycle
4. pyrimidines are catabolised to carbon dioxide and ammonia
5. purines are catabolised to uric acid
- c. directly enter the urea cycle