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Purine: Quiz

  
  

Question 1:
What is the chemical name of Purine (IUPAC)
N--7H-purin-6-amine
6-Methoxy-7H-purin-2-amine
N'-cyclohexyl-N--7H-purine-2,6-diamine
7H-purine

Question 2: [2] The starting material for the reaction sequence was ________ (8), which had been isolated from kidney stones by Scheele in 1776.
Uric acidUridine monophosphateXanthineCarbamoyl phosphate

Question 3: In ________, these bases form hydrogen bonds with their complementary pyrimidines thymine and cytosine, respectively.
ProteinGeneDNARNA

Question 4: A purine is a heterocyclic ________ organic compound, consisting of a pyrimidine ring fused to an imidazole ring.
AromaticityCovalent bondChemical bondConjugated system

Question 5: The Traube purine synthesis (1900) is a classic reaction (named after Wilhelm Traube) between an ________-substituted pyrimidine and formic acid [13]
AlcoholAmideAminePyridine

Question 6: Two of the four deoxyribonucleotides and two of the four ribonucleotides, the respective building blocks of ________ and RNA, are purines.
GeneGeneticsDNAProtein

Question 7: Purines, including substituted purines and their tautomers, are the most widely distributed kind of nitrogen-containing ________ in nature.
AzolePyrroleSimple aromatic ringHeterocyclic compound

Question 8: The quantity of naturally occurring purines produced on earth is huge, as 50 percent of the bases in ________, adenine (2) and guanine (3), are purines.
Nucleic acid analoguesDNARNANucleic acid
















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