Nucleotide: The Building Block of Life and Genetic Information


monomer of nucleic acids; 3 parts are: 1) Nitrogen base2) Sugar compound3) Phosphate group

A nucleotide is a molecule that serves as the basic building block of nucleic acids such as DNA and RNA. Each nucleotide is composed of a nitrogenous base, a five-carbon sugar, and at least one phosphate group. There are four types of nitrogenous bases that can be found in nucleotides: adenine (A), guanine (G), cytosine (C), and thymine (T) in DNA and uracil (U) in RNA. The five-carbon sugar in DNA is called deoxyribose, while the sugar in RNA is called ribose. The phosphate group(s) attached to the sugar make up the backbone of the nucleic acid chain. Nucleotides are responsible for carrying genetic information from one generation to another and are essential for life.

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