DNA is a double helix formed by base pairs attached to a sugar-phosphate backbone.
Nucleic acid structure refers to the structure of nucleic acids such as DNA and RNA. Chemically speaking, DNA and RNA are very similar. Nucleic acid structure is often divided into four different levels: primary, secondary, tertiary and quaternary. Nucleic acids are formed when nucleotides come together through phosphodiester linkages between the 5' and 3' carbon atoms. A Nucleic acid sequence is the order of nucleotides within a DNA (GACT) or RNA (GACU) molecule that is determined by a series of letters. The backbone of the DNA strand is made from alternating phosphate and sugar residues. The sugar in DNA is 2-deoxyribose, which is a pentose (five-carbon) sugar. The sugars are joined together by phosphate groups that form phosphodiester bonds between the third and fifth carbon atoms of adjacent sugar rings. These asymmetric bonds mean a strand of DNA has a direction. Exploring a DNA chain The sugars in the backbone The backbone of DNA is based on a repeated pattern of a sugar group and a phosphate group. The full name of DNA, deoxyribonucleic acid, gives you the name of the sugar present-deoxyribose. Deoxyribose is a modified form of another sugar called ribose. I'm going to give you the structure of that first, because you will need it later anyway. Ribose is the sugar in the backbone of RNA, ribonucleic acid. First of all, DNA is not made up of nucleotide bases but of nucleotides. These consist of a sugar bound to one of the 4 nucleobases Adenine, Cytosine, Guanine or Thymine (Uracil in the case of RNA) and a phosphate group. When these bases are bound to a sugar (2-deoxyribose for DNA), they form the nucleosides Adenosine, Cytidine, Guanosine or Thymidine respectively: When the nucleosides are bound to one or more phosphate groups, they become nucleotides. The general structure of a nucleotide is (source): Deoxyribonucleic acid (/diˌɒksiˌraɪbɵ.njuːˌkleɪ.ɨk ˈaesɪd/ ; ˈæSɪD) dna is a molecule that carries most of the genetic instructions used in the, development functioning and reproduction of all known living organisms and many. viruses The sugar in DNA is 2-deoxyribose, which is a pentose (five-carbon) sugar. The sugars are joined together by phosphate groups that form phosphodiester bonds between the third and fifth carbon atoms of adjacent sugar rings. These asymmetric bonds mean a strand of DNA has a direction. DNA also includes sugars and phosphate groups that make the phosphate-deoxyribose backbone. If you think of the structure of DNA as a twisted ladder, the rungs of the ladder are made from the nitrogenous bases. These bases pair up to make each step of the ladder. They also only pair up in a specific way.  DNA is a double helix formed by base pairs attached to a sugar-phosphate backbone. DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person’s body has the same DNA. The structure of the double helix is somewhat like a ladder, with the base pairs forming the ladder’s rungs and the sugar and phosphate molecules forming the vertical sidepieces of the ladder. An important property of DNA is that it can replicate, or make copies of itself. up vote 1 down vote. DNA is made of three types of molecules in equal proportions-basic nucleotides, sugar deoxyribose and acidic phosphate groups. The bases are on the inside of the helix and partly hidden from the outside. Deoxyrybose and phopshates are on the outside, forming a backbone. When these bases are bound to a sugar (2-deoxyribose for DNA), they form the nucleosides Adenosine, Cytidine, Guanosine or Thymidine respectively: When the nucleosides are bound to one or more phosphate groups, they become nucleotides. The general structure of a nucleotide is (source):
https://en.wikipedia.org/wiki/Nucleic_acid_structure https://en.wikipedia.org/wiki/DNA http://www.chemguide.co.uk/organicprops/aminoacids/dna1.html http://biology.stackexchange.com/questions/3864/dna-as-an-acid https://en.wikipedia.org/wiki/DNA https://askabiologist.asu.edu/dna-shape-and-structure http://ghr.nlm.nih.gov/handbook/basics/dna http://biology.stackexchange.com/questions/3864/dna-as-an-acid
is dna backbone basic