<prompt> True about tRNA ?80 of total RNAContains 50-60 nucleotidesCCA sequence is transcribedLongest RNA  <response>: The CCA tail is a CCA sequence at 3 end of the tRNA molecule. In prokaryotes, CCA sequence is transcribed. In eukaryotes, the CCA sequence is added during processing.tRNA is the smallest of three major species of RNAs -- Dinesh puri tRNA comprises 15 of total RNA in the cell. It contains 73-93 nucleotide residue. 