#Question id: 983
#Unit 1. Molecules and their Interaction Relevant to Biology
The pyrimidine ring system is shown below. What is the source of the C-2 during the de novo biosynthesis of pyrimidines?
#Question id: 984
#Unit 1. Molecules and their Interaction Relevant to Biology
What is the source of the N-1 during the de novo biosynthesis of pyrimidines?
#Question id: 985
#Unit 1. Molecules and their Interaction Relevant to Biology
In the pyrimidine ring system, what is the source of the carbons 4,5 and 6 during the de novo biosynthesis of pyrimidines?
#Question id: 986
#Unit 1. Molecules and their Interaction Relevant to Biology
Inhibition of ATCase by a ________ nucleotide and activation of ATCase by a ________ nucleotide keep the balance of purine and pyrimidine pools in E. coli.
#Question id: 987
#Unit 1. Molecules and their Interaction Relevant to Biology
Which is not a direct precursor of pyrimidines in their de novo biosynthesis?
#Question id: 988
#Unit 1. Molecules and their Interaction Relevant to Biology
Which is the precursor of all pyrimidine ribo- and deoxyribonucleotides?