Nitrogenous base.
In the case of the nucleotides in DNA, the sugar is deoxyribose attached to a single phosphate group (hence the name deoxyribonucleic acid), and the base may be either adenine (A), cytosine (C), guanine (G), or thymine (T). A DNA molecule consists of two long polynucleotide chains composed of four types of nucleotide subunits. Each of these chains is known as a DNA chain, or a DNA strand. Hydroge … n bonds between the base portions of the nucleotides hold the two chains together (Figure 4-3). 1 In DNA, the sugar is 2'-deoxyribose. 2  In RNA, the sugar is ribose. 3  Both ribose and deoxyribose are 5-csrbon sugars. 4  The carbons are numbered sequentially, to help keep track of where groups are attached. 5  The only difference between them is that 2'-deoxyribose has one less oxygen atom attached to the second carbon. When nucleotides connect to form DNA or RNA, the phosphate of one nucleotide attaches via a phosphodiester bond to the 3-carbon of the sugar of the next nucleotide, forming the sugar-phosphate backbone of the nucleic acid. A nucleoside consists of a nitrogenous base covalently attached to a sugar (ribose or deoxyribose) but without the phosphate group. A nucleotide consists of a nitrogenous base, a sugar (ribose or deoxyribose) and one to three phosphate groups. Nucleoside = Sugar + Base. Nucleotide = Sugar + Base + Phosphate. Sugar + Base. A nucleoside consists of a nitrogenous base covalently attached to a sugar (ribose or deoxyribose) but without the phosphate group. When phosphate group of nucleotide is removed by hydrolysis, the structure remaining is nucleoside. Sugar + Base + Phosphate. Answer: Both deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) are made up of nucleotides which consist of three parts: 1  Nitrogenous Base. 2  Purines and pyrimidines are the two categories of nitrogenous bases. 3  Pentose Sugar. 4  In DNA, the sugar is 2'-deoxyribose. 5  Phosphate Group. 6  A single phosphate group is PO 4 3- . When nucleotides connect to form DNA or RNA, the phosphate of one nucleotide attaches via a phosphodiester bond to the 3-carbon of the sugar of the next nucleotide, forming the sugar-phosphate backbone of the nucleic acid. 1 One of the chemical differences between DNA and RNA is that in RNA, the nitrogenous base Uracil is used instead of Thymine. 2  Phosphate group(s) : 3  Nucleotides may have one, two, or three phosphate groups attached. Ribose is the sugar component of nucleotides. One of the main chemical differences between DNA and RNA is that in RNA, the sugar is ribose, but in DNA, the sugar is deoxy ribose, in which an oxygen has been removed. Without the phosphate group, the nucleobase and sugar compose a nucleoside. The phosphate groups form bonds with either the 2, 3, or 5-carbon of the sugar, with the 5-carbon site most common. Cyclic nucleotides form when the phosphate group is bound to two of the sugar's hydroxyl groups. The structure of nucleotide monomers. A nucleotide is made of a nucleobase (also termed a nitrogenous base), a five-carbon sugar (either ribose or 2-deoxyribose) depending on if it is DNA or RNA, and one or, depending on the definition, more than one phosphate groups. This nucleotide contains the five-carbon sugar deoxyribose, a nitrogenous base called adenine, and one phosphate group. Together, the deoxyribose and adenine make up a nucleoside (specifically, a deoxyribonucleoside) called deoxyadenosine. The structure of nucleotide monomers. A nucleotide is made of a nucleobase (also termed a nitrogenous base), a five-carbon sugar (either ribose or 2-deoxyribose) depending on if it is DNA or RNA, and one or, depending on the definition, more than one phosphate groups. One deoxyribose molecule   2. One phosphate group   3. One nitrogenous base (Adenine, Guanine, Thymine and … Cytosine)   Since each nucleotide carries only one of four possible nitrogenous base, there are are four possible different DNA nucleotides.   In RNA each nucleotide consists of three parts:   1. One ribose molecule   2. One phosphate group   3. One nitrogenous base (Adenine, Guanine, Uracil and Cytosine) Note: Uracil takes the place of Thymine in RNA   Since each nucleotide carries only one of four possible nitrogenous base, there are are four possible different RNA nucleotides
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what is the one part of a nucleotide that differs