Possibly influenced by Danish grim (âsoot, grimeâ), Old Dutch grijmsel, Middle Dutch grime, Middle Low German greme (âdirtâ). Dirt, grease, soot, etc. that is ingrained and difficult to remove.
messenger RNA. a molecule of RNA that is synthesized in the nucleus from a DNA template and then enters the cytoplasm, where its genetic code specifies the amino acid sequence for protein synthesis.
transfer RNA (tRNA) -a molecule of RNA that binds an amino acid at one site and an mRNA codon at its anticodon site. -Their role is to carry each amino acid to the ribosome at the correct spot along the mRNA molecule.