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 …
Nucleotide - Definition, Structure (3 Parts), Examples & Function
Oct 29, 2016 · 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.
Nucleotide Definition, Structure, and Function
Aug 31, 2023 · 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). …
Nucleotide - National Human Genome Research Institute
2 days ago · 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. The bases used in DNA …
Nucleotide | Description, Types, Function, & Facts | Britannica
Oct 18, 2025 · 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 …
Nucleotide: Structure, Types, and Biological Functions
Apr 28, 2024 · 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 …
What Is a Nucleotide? Definition, Structure, and Function
Nucleotides are organic molecules that serve as the basic structural (monomer) units for DNA and RNA, which, as we know, are the building blocks responsible for all life on Earth. Each …
Definition of nucleotide - NCI Dictionary of Genetics Terms
A nucleotide is made up of a nitrogen-containing base (adenine, guanine, thymine, and cytosine in DNA, and adenine, guanine, uracil, and cytosine in RNA), a phosphate group, and a sugar …
Introduction to nucleic acids and nucleotides - Khan Academy
DNA and RNA, composed of nucleotide building blocks, store hereditary information. These polymers have a backbone of alternating ribose and phosphate groups, with nitrogenous …
What is a Simple Nucleotide? A Basic Definition
Jul 30, 2025 · What is a Nucleotide? A nucleotide is a molecule composed of three subunits: a five-carbon sugar, a phosphate group, and a nitrogenous base. The sugar molecule is either …