Question

Consider the below situation and select the correct option.

During an experiment conducted by a group of scientists in a eukaryotic cell they deliberately removed the RNA polymerase III from nucleoplasm. This act will most severely affect the synthesis of

• A. t RNA
• B. hn RNA
• C. m RNA
• D. r RNA

Answer 1

The correct option is A t RNA

There are three different types of RNA polymerases present in eukaryotic cells and all of them have specific functions related to synthesis of various types of RNA.

RNA polymerase III synthesises tRNA , 5 srRNA, Sn RNA in the nucleolus.

If there is no RNA pol. III synthesis of tRNA will be stopped.

RNA polymerase I synthesises rRNA subunits 28S, 18S in the nucleolus.

RNA polymerase II synthesizes mRNA and hnRNA inside the nucleus.