Nucleotide - Wikipedia
Nucleotides are organic molecules composed of a nitrogenous base, a pentose sugar and a phosphate. They serve as monomeric units of the nucleic acid polymers – deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), both of which are essential biomolecules within all life-forms on Earth.

Nucleotide | Description, Types, Function, & Facts | Britannica
A nucleotide is any member of a class of organic compounds in which the molecular structure comprises a nitrogen-containing unit (base) linked to a sugar and a phosphate group.

Nucleotide Definition, Structure, and Function
What Is a Nucleotide? A nucleotide is an organic molecule that serves as the building block for nucleic acids like DNA (deoxyribonucleic acid) and RNA (ribonucleic acid). These molecules consist of three primary components: a nitrogenous base, a sugar molecule, and one or more phosphate groups.

NCBI Nucleotide - National Library of Medicine
The Nucleotide database is a database of nucleic acid sequences. These sequences come from laboratories around the world that submit their data to one of a set of repositories, including GenBank, which is maintained by NCBI.

Nucleotide - National Human Genome Research Institute
A nucleotide is the basic building block of nucleic acids (RNA and DNA). A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base.

Nucleotide base - Wikipedia
Nucleotide bases[1] (also nucleobases, nitrogenous bases) are nitrogen -containing biological compounds that form nucleosides, which, in turn, are components of nucleotides, with all of these monomers constituting the basic building blocks of nucleic acids.

Nucleotide - Definition, Structure (3 Parts), Examples & Function
A nucleotide is an organic molecule that is the building block of DNA and RNA. They also have functions related to cell signaling, metabolism, and enzyme reactions. A nucleotide is made up of three parts: a phosphate group, a 5-carbon sugar, and a nitrogenous base.

Nucléotide — Wikipédia
Un nucléotide est une molécule organique composée d'une base azotée (ou base nucléique), d'un ose à cinq atomes de carbone (pentose), dont l'association forme un nucléoside, et enfin de un à trois groupes phosphate.

Nucleotide: Structure, Types, and Biological Functions
A nucleotide is a pentose sugar linked to a nitrogenous base and a phosphate molecule. Nucleotides are the building blocks of DNA. Figure: Nucleotide. The nitrogenous bases are derived from two-parent compounds – purines and pyrimidines.

Nucleotide - Simple English Wikipedia, the free encyclopedia
Nucleotides are the building blocks of the nucleic acids RNA and DNA. These two types of nucleic acid are essential biomolecules in all forms of life on Earth.