Respuesta :
Nucleotides are molecules that contain nitrogenous bases, sugar groups, phosphate groups, and the building blocks of DNA.
The smallest unit of a substance, a molecule is made up of two or more atoms joined together by chemical bonds. Atoms can join together to form molecules, either the same atom or a different one. A nucleotide is an illustration of a molecule made up of various atoms.
Phosphate groups, ribose sugar (in RNA or deoxyribose in DNA), and nitrogenous bases make up the compounds known as nucleotides. In nucleotides, nitrogenous bases come in four different varieties: adenine, guanine, cytosine, and thymine. DNA is stored in nucleotides, which also act as a source of cellular energy and signalling.
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