RNA molecules are polymers of nucleotides joined to one another by covalent bonds between the phosphate of one nucleotide and the sugar of another. The five-carbon sugar ring and the content of the nitrogenous base between DNA and RNA are slightly different from each other. Both the purines have two rings in their molecular structure, while the pyrimidines have a single ring only. Explanation: Adenine and guanine are called purines. A nitrogenous base is simply a molecule that contains nitrogen and has the chemical properties of a base. A set of five nitrogenous bases is used in the construction of nucleotides, which in turn build up the nucleic acids like DNA and RNA. The correct answer: The nitrogenous base which is associated with RNA but not found in DNA is Uracil.. These bases are crucially important because the sequencing of them in DNA and RNA is the way information is stored. ... a nitrogen-containing base found in RNA (but not in DNA) and derived from pyrimidine. Which nitrogenous base found in DNA and RNA pairs with guanine? There are four nitrogenous bases in the DNA, which are … A. Adenine B. Cytosine C. Guanine D. Thymine Feedback: Correct. These linkages are called phosphodiester linkages. Each nucleotide has three parts: a 5-carbon ribose sugar, a phosphate group and a nitrogenous base. In RNA, the thymine is replaced by uracil (U). mutation. The nitrogenous bases form the backbone on the outside of each DNA strand, There are 2 strands in the DNA molecule, & The nitrogenous bases are near the center of the DNA molecule. b. a nitrogenous base. RNA has four bases, Adenine and Guanine (both purines), and Uracil and Cytosine (both pyrimidines). DNA is a type of nucleic acid made up of many subunits called nucleotides. The nucleotides consist of three components – a 5 carbon sugar (Ribose in RNA and Deoxyribose in DNA), a phosphate group, and a nitrogenous base (Purines –A and G, Pyrimidines – C, T, and U). The nucleotides for DNA go by the name of Deoxyribo-nucleotides. Section 3.3. RNA nitrogenous bases include adenine (A), guanine (G), cytosine (C) and uracil (U).The five-carbon (pentose) sugar in RNA is ribose. Two complementary strands of DNA come together thanks to hydrogen bonding between the nitrogenous bases that allows DNA to make a ladder-like form that twists into the famous double-helix. During RNA synthesis, the phosphate group of a new ribonucleotide is attached by the enzyme RNA polymerase to the 3' carbon of a ribonucleotide. On the basis of monomeric unit composition, they can be either DNA or RNA. Answer: There are four nitrogeneous bases used in RNA: Adenine, guannine, cytosine and uracil. Four different types of nitrogenous bases are found in DNA: adenine (A), thymine (T), cytosine (C), and guanine (G). Nitrogenous Bases. There are four nitrogenous bases found in RNA: adenine, guanine, cytosine, or uracil. a mistake in DNA sequence. 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