A. covalently bonded to a sugar B. ionically bonded to a sugar C. hydrogen bonded to a sugar D. none of the above. Which of the following is TRUE with respect to mutations? Pyridmidines have only a six-membered nitrogen-containing ring. Answer: A. Purines and pyrimidine are nitrogenous bases found in DNA and RNA. There is a printable worksheet available for download here so you can take the quiz with pen and paper.. cna. A. Ammonia B. Carbamoyl phosphate C. Folate D. A. Transitions and transversions are equally likely B. This includes Aspartate, glycine, and glutamine. 3. The number of rings this base has determines whether the base is a purine (two rings) or a pyrimidine (one ring). : The Basics. Quickly memorize the terms, phrases and much more. Some amino acids are necessary for purine synthesis. They may be similar, but they are totally different in structure. The answer you chose is highlighted in reverse video. 4. Answer: B. There are two kinds of nitrogen-containing bases - purines and pyrimidines. What are Purines and Pyrimidines? Guanine is a purine and the purine ring is excreted as uric acid. Cram.com makes it easy to get the grade you want! ANS: Transitions change a pyrimidine into a pyrimidine or a purine into a purine. In gel electrophoresis, what fragments will move most quickly through a gel? Purine and Pyrimidine Metabolism Quiz An infant is suffering from anemia with enlarged red blood cells. Return to Question Document. A. ... purine and pyrimidine bases 5. The molecular formula of purine is C5H4N4. Nucleoside is a pyrimidine or purine base. Study Flashcards On Biochemistry Exam 4 - Purine & Pyrimidine Metabolism at Cram.com. This quiz has tags. Quiz Questions. This quiz tests how much you know about essential DNA biochemistry, including the shape of deoxyribonucleic acid and its bases. In tissues that do not carry out active de novo synthesis, maintenance of an adequate supply of adenine nucleotides: . Purines consist of a six-membered and a five-membered nitrogen-containing ring, fused together. 5. About this Quiz. The correct answer is in bold. Small fragments C. Large genome D. None of these. There are 4 purines and 4 pyrimidines that are of concern to us. This is an online quiz called Purine and Pyrimidine Constituents. US States Double Border Blitz Map 11,518; 5x5 in 90: Mixed Holiday Minefield Blitz 10,375; Find the US States - No Outlines Minefield 7,910; Hide Europe's Flags (Minefield) 6,725 Click the 'J' Movie Title Character 6,287; More Quizzes Overview. A. occurs primarily by adenine salvage using A-PRT. Large fragments B. Question 1 of 16. Popular Quizzes Today. Only the pyrimidine ring is cleaved. Purines are made up of 2 Carbon nitrogen rings. Each DNA strand has a ‘backbone’ that is made up of a sugar-phosphate chain. 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