Birgid Schlindwein's

Hypermedia Glossary Of Genetic Terms

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Ribonucleic acid (RNA) A chemical found in the nucleus and cytoplasm of cells; it plays an important role in protein synthesis and other chemical activities of the cell. The structure of RNA is similar to that of DNA. There are several classes of RNA molecules, including messenger RNA, transfer RNA, ribosomal RNA, and other small RNAs, each serving a different purpose.
Related Terms:
Nucleus The term introduced by Brown (1833) for the more or less spherical structure which occures in cells and stains deeply with basic dyes. The cellular organelle in eukaryotes that contains the genetic material.
Messenger RNA (mRNA) RNA that serves as a template for protein synthesis or for synthesis of cDNA. See genetic code.
Transfer RNA (tRNA) A class of RNA having structures with triplet nucleotide sequences that are complementary sequences to the triplet nucleotide coding sequences of mRNA. The role of tRNAs in protein synthesis is to bond with amino acids and transfer them to the ribosomes, where proteins are assembled according to the genetic code carried by mRNA.
Ribosomal RNA (rRNA) A class of RNA found in the ribosomes of cells.

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Programming: Herbert Maier
Database: Birgid Schlindwein. Please contact me if you encounter any mistakes or if you are missing anything
© Dr. Birgid B. Schlindwein
last update of the database 10/01/2006