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A ribose sugar linked by phosphate groups.
Nucleic acids are made of monomers known as nucleotides. There are 3 parts to nucleotides: one of 4 nitrogenous bases, a sugar, and a phosphate group. RNA as well as DNA are both nucleotides. The four bases in DNA are: Adenine, Guanine, Cytosine and Thymine (present in DNA only). Plus a slightly different base: Uracil (present in RNA only). The sugars are deoxyribose (in DNA) and ribose (in RNA). The Phosphate groups plus the sugars form the sides of the ladder as the molecule comes together. The bases are the rungs or steps on the ladder. The entire molecule will form a twisted ladder when fully complete.
The structure of DNA can be compared to a ladder. It has an alternating chemical phosphate and sugar backbone, making the "sides" of the ladder. (Deoxyribose is the name of the sugar found in the backbone of DNA.) In between the two sides of this sugar-phosphate backbone are four nitrogenous bases: adenine (A), thymine (T), cytosine (C), and guanine (G). (A grouping like this of a phosphate, a sugar, and a base makes up a subunit of DNA called a nucleotide.) These bases make up the "rungs" of the ladder, and are attached to the backbone where the deoxyribose (sugar) molecules are located.
DNA is made up of deoxyribose, phosphate, and nitrogen bases (adenine, thymine, cytosine, and guanine). The rungs of the ladder are made of two bases joined together with either two or three weak hydrogen bonds.
The Sides of this ladder equate to the Dna's Sugar-Phosphate Backbone; the Rungs of this ladder equate to the Hydrogen-bonding that takes place between base pairs.
The sides of the DNA latter consist of the sugar deoxyribose and phosphates. The bond between the latter and the nitrogen bases together is known a a nucleotide. Nucleotides are molecules that make up the structure of DNA and RNA.
sugar
Chemical phosphate and sugar backbone
The former has four sides while the latter has three sides.
The former has 4 sides while the latter has 6 sides.
Phosphates and sugars.
Backbone. A deoxyribose sugar and a phosphate group.
A ribose sugar linked by phosphate groups.
A square or a diamond. The latter is properly called a rhombus.
The structure of DNA can be compared to a ladder. It has an alternating chemical phosphate and sugar backbone, making the "sides" of the ladder. (Deoxyribose is the name of the sugar found in the backbone of DNA.) In between the two sides of this sugar-phosphate backbone are four nitrogenous bases: adenine (A), thymine (T), cytosine (C), and guanine (G). (A grouping like this of a phosphate, a sugar, and a base makes up a subunit of DNA called a nucleotide.) These bases make up the "rungs" of the ladder, and are attached to the backbone where the deoxyribose (sugar) molecules are located.
Nucleic acids are made of monomers known as nucleotides. There are 3 parts to nucleotides: one of 4 nitrogenous bases, a sugar, and a phosphate group. RNA as well as DNA are both nucleotides. The four bases in DNA are: Adenine, Guanine, Cytosine and Thymine (present in DNA only). Plus a slightly different base: Uracil (present in RNA only). The sugars are deoxyribose (in DNA) and ribose (in RNA). The Phosphate groups plus the sugars form the sides of the ladder as the molecule comes together. The bases are the rungs or steps on the ladder. The entire molecule will form a twisted ladder when fully complete.
I'm assuming you mean the double helix "ladder-like" formation of a strand of DNA. The sides of the structure are essentially a phosphate-deoxyribose backbone.