Question

The RNA polymerase complex in E.coli includes the exchangeable sigma “σ” factor. It plays an essential role in

A. both initiation and elongation

B. Synthesis of only the α subunit

C. initiation but not in elongation

D. synthesis of the α, β, ω subunits

E. elongation but not in initiation

2.In the eukaryotes, a role similar to that of the σ factor is played by

A. TBP

B. TFIIH

C. TFIID

D. TFIIA

E. TFIIF

3.UGA is a stop codon in the nucleus of vertebrate cells. What amino acid does it code in the vertebrate mitochondrial gene?

A. F

B. S

C. Y

D. W

E. R

Answer 1

Felt great to answer. Good luck!