What kind of bond holds nucleotides together

Each base has only one other base it can pair with. To get the count of each type of nucleotide in some DNA, you have to look at each base, see what it is, and then keep four counts, one for each nucleotide. Adenine pairs with thymine, and cytosine pairs with guanine. DNA sequence information is important to scientists investigating the functions of genes. Skip to content Lifehacks.

May 1, Joe Ford. Table of Contents. These interactions are specific: A base pairs with T, and C base pairs with G. This occurs via hydrogen bonds, which are shown with dotted lines in the figure above. If DNA were thought of as a spiral staircase, the base pairs would be the steps. This is illustrated in the figure below.

This structure places the non-polar bases of DNA in the center of the double-stranded molecule, surrounded by the charged phosphate groups. This has two functional consequences.

First, remember that like charges repel each other. The double-helix structure, with negatively charged phosphates on the outside edges, allows the phosphates to be as far apart as possible. Explanation: Nucleotides are linked together by the formation of a phosphodiester bond which is formed between the 3' -OH group of one sugar molecule, and the 5' phosphate group on the adjacent sugar molecule.

Related questions How does a covalent bond become polar? How do covalent bonds affect physical properties? How do covalent bonds conduct electricity? How do covalent bonds differ from hydrogen bonds?

Adenine, guanine, cytosine and uracil are the four nitrogenous bases always found in RNA. There are several different forms of RNA, each playing a slightly different role in the cell. They deliver their "messages" to the protein synthesizing machinery in the cytoplasm of the cell. There are several kinds of rRNA, some are found in the large ribosomal subunit and some in the small subunit.

There are more than 20 types of tRNA. They act as the link between the genetic code and the process of joining amino acids together to form polypeptides. Deoxyribose is the pentose sugar found in this type of polynucleotide, hence its name D eoxyribo n ucleic A cid, or DNA.