Question

name the three Polymers found in the Eukaryotic cells and mention their function​

Answer 1

(i) RNA Polymerase I – it is like a workhorse, they produce nearly 50% RNA transcribed in the cell. It exclusively polymerizes ribosomal RNA, i.e., synthesizes all the rRNAs except for the 5S rRNA molecule.

(ii) RNA polymerase II – It synthesizes all protein-coding nuclear mRNA precursors. It also catalyzes the formation of small nuclear RNAs and micro RNAs.

(iii) RNA polymerase III – It transcribes a variety of structural RNAs, transfer pre-RNAs (tRNAs) and small nuclear pre-RNAs. It is important as its targets for normal functioning of the cell.

(iv) RNA polymerase IV and RNA polymerase V – are usually found in plants. They are necessary in the formation of small interfering RNA and heterochromatin in the nucleus.