Question

The mitochondrial RNA polymerase is made up of _____________

(a) 1 subunit

(b) 2 subunits

(c) 3 subunits

(d) multiple subunits

I got this question during a job interview.

My question is based upon Mitochondrial Structure and Function in section Mitochondrial Structure and Function of Cell Biology

Answer 1

Right choice is (a) 1 subunit

The explanation is: Mitochondrial RNA polymerase helps in the synthesis of proteins from mitochondrial RNA. The mitochondrial RNA polymerase is unlike the multi-subunit RNA polymerase enzyme of prokaryotic and eukaryotic cell and contains only a single subunit similar to certain bacterial viruses.