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What are the purines found in both DNA and RNA? Adenylosuccinate lyase. Adenosine -> inosine reaction. Cytosine and Uracil. Adenine and Guanine. 1 of 107. Term. What are the pyrimidines found in DNA? Adenosine -> inosine reaction. At position 9 of purines. Adenine and Guanine. Cytosine and Thymine. 2 of 107. Term.
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9 Νοε 2023 · Multiple Choice Questions on Purine & Pyrimidine Metabolism. Purine metabolism is a crucial biochemical process that involves the biosynthesis, degradation, and recycling of purine nucleotides, which are essential building blocks of DNA and RNA.
DNA (deoxyribonucleic acid) and RNA (ribonucleic acid) are composed of two different classes of nitrogen-containing bases: the purines and pyrimidines. The most commonly occurring purines in DNA are adenine and guanine :
The nitrogenous bases are purines such as adenine (A) and guanine (G), or pyrimidines such as cytosine (C), thymine (T), and uracil (U). Figure 1. Each nucleotide is made up of a sugar (ribose for nucleotides in RNA, deoxyribose for nucleotides in DNA), a phosphate group, and a nitrogenous base.
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