Question

State function of the following in a prokaryote: rRNA

Answer 1

Hint: It is a molecule that is present in cells and it forms part of the protein-synthesizing organelle and that is exported to the cytoplasm to help translate the information in messenger RNA (mRNA) into protein.

Complete answer:
Ribosomal RNA (rRNA), is the RNA component of a ribosome and it helps in protein synthesis. These structures truly move along an mRNA atom and catalyze the amassing of amino acids into protein chains. They likewise tie tRNAs and different frill particles required for the synthesis of protein.

Additional Information: Ribosomal RNA has a distinctive three-dimensional shape that involves internal loops and helices that create specific sites within the ribosome – the A, P, and E sites. The P site is for binding a growing polypeptide, the A site anchors an incoming tRNA charged with an amino alkanoic acid. After peptide linkage formation, the tRNA binds briefly to the E site before leaving the ribosome. In addition, rRNA also has sites for binding to some ribosomal proteins and careful analysis has demarcated the precise residues in both the RNA and protein.
Ribosomal RNA is also expressed in every cell of all extant species. The sequence of the core catalytic sites is additionally highly conserved making rRNA a superb tool for the study of taxonomy and phylogenetics. There is a difference within the rate of evolution of residues on the surface and interior of rRNA, and nucleotides involved in core catalytic activity, like within the formation of a peptide linkage, appear to possess predated the looks of life on earth. The degree to which two species vary in rRNA arrangements can give a decent gauge of their developmental separation.

Note: Ribosomal RNA is transcribed in the nucleus, at specific structures called nucleoli. These are thick, round shapes that structure around hereditary loci coding for rRNA. Nucleoli are also crucial for the eventual biogenesis of ribosomes, through the sequestration of ribosomal proteins.