DNA (deoxyribonucleic acid) is a type of macromolecule known as a nucleic acid.
Definition: DNA (deoxyribonucleic acid) is a type of macromolecule known as a nucleic acid. It is shaped like a twisted double helix and is composed of long strands of alternating sugars and phosphate groups, along with nitrogenous bases (adenine, thymine, guanine and cytosine). DNA. deoxyribonucleic acid: an extremely long, double-stranded nucleic acid molecule arranged as a double helix that is the main constituent of the chromosome and that carries the genes as segments along its strands: found chiefly in the chromatin of cells and in many viruses. [1930–35]. DNA. Definition. noun. A double-stranded nucleic acid that contains the genetic information for cell growth, division, and function. Supplement. Structure: DNA is composed of two strands that twist together to form a helix. deoxyribonucleic acid, desoxyribonucleic acid, DNA (noun). (biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information. see more on Definitions.net ». DNA. Short for deoxyribonucleic acid. The nucleic acid that is the genetic material determining the makeup of all living cells and many viruses. It consists of two strands of nucleotides linked together in a structure resembling a ladder twisted into a spiral. Example sentences. 1  Within the nucleus are chromosomes that contain DNA, or deoxyribonucleic acid, genetic material unique to each individual. 2  In cultured cells, the consumption of the nutrients in the medium may affect the cell metabolism by interfering with deoxyribonucleic acid, ribonucleic acid and protein synthesis. DNA, short for deoxyribonucleic acid, is the molecule that contains the genetic code of organisms. This includes animals, plants, protists, archaea and bacteria. DNA is in each cell in the organism and tells cells what proteins to make. Mostly, these proteins are enzymes.
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meaning of dna