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Ribonucleic acid (RNA)
1) Ribonucleic acid. One of the two types of nucleic acids found in all cells. The other is deoxyribonucleic acid (DNA). RNA transmits genetic information from DNA to proteins produced by the cell.
2) Any of various nucleic acids that contain ribose and uracil as structural components and are associated with the control of cellular chemical activities -- called also ribonucleic acid.
3) Ribonucleic acid, a chemical similar to DNA. The several classes of RNA molecules play important roles in protein synthesis and other cell activities.
4) Ribonucleic acid (RNA) is a molecule similar to DNA. Unlike DNA, RNA is single-stranded. An RNA strand has a backbone made of alternating sugar (ribose) and phosphate groups. Attached to each sugar is one of four bases--adenine (A), uracil (U), cytosine (C), or guanine (G). Different types of RNA exist in the cell: messenger RNA (mRNA), ribosomal RNA (rRNA), and transfer RNA (tRNA). More recently, some small RNAs have been found to be involved in regulating gene expression.
- Part of Speech: noun
- Synonym(s):
- Blossary:
- Industry/Domain: Health care
- Category: Genetic disorders
- Company: National Library of Medicine
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