Exam 25: Nucleotide Biosynthesis

How many ATP molecules are necessary to make carbamoyl phosphate by carbamoyl phosphate synthetase (CPS)?

Which enzyme(s), in nucleotide biosynthesis pathways, use(s) a substrate channeling mechanism?

Briefly describe, in one or two sentences, the reaction by which carbamoyl phosphate synthetase acquires an ammonia to make carbamoyl phosphate.

The displacing nucleophile in pyrimidine synthesis is typically

What are advantages of high urate levels such as those found in higher primates (like humans)?

How is the reciprocal use of nucleotides useful in purine synthesis?

Why is nucleotide synthesis an important pathway for medical intervention? What types of disease could be treated using this information?

Which of the following is a competitive inhibitor of dihydrofolate reductase that is effective for anticancer chemotherapy?

All of the nitrogen atoms found in nucleotides are ultimately derived from

Assembly of a compound from simpler molecules not salvaged from pre-existing similar molecules is known as a(n) _____ pathway.