The biosynthesis of deoxynucleosides is important,yet different organisms require different sets of enzymes to carry it out.If 100 different species were analyzed,which enzyme is most likely to be found in all of them?
A) ribonucleotide reductase
B) thioredoxin
C) glutaredoxin
D) glutathione reductase

Question

Quizplus · Accepted Answer

Ribonucleotide reductase is a universally conserved enzyme involved in the biosynthesis of deoxynucleosides. It is responsible for converting ribonucleotides to deoxyribonucleotides, which are the building blocks of DNA. Therefore, it is the most likely enzyme to be found in all 100 different species analyzed. Thioredoxin, glutaredoxin, and glutathione reductase are important enzymes involved in cellular redox metabolism, but they are not directly involved in the biosynthesis of deoxynucleosides.

The Biosynthesis of Deoxynucleosides Is Important,yet Different Organisms Require Different