#Question id: 973
#Unit 1. Molecules and their Interaction Relevant to Biology
What is the source of the atoms 5 and 7 during de novo biosynthesis of purines?
#Question id: 974
#Unit 1. Molecules and their Interaction Relevant to Biology
What is the source of the N-1 atom during de novo biosynthesis of purines?
#Question id: 975
#Unit 1. Molecules and their Interaction Relevant to Biology
What is the source of the C-6 atom during de novo biosynthesis of purines?
#Question id: 976
#Unit 1. Molecules and their Interaction Relevant to Biology
Which amino acid is not directly involved in the de novo biosynthesis of purines?
#Question id: 977
#Unit 1. Molecules and their Interaction Relevant to Biology
Which is the source of the ribose ring in purine nucleotides?
#Question id: 978
#Unit 1. Molecules and their Interaction Relevant to Biology
Which is a common precursor in the de novo synthesis of purine nucleotides?