Contents

The transcribing enzyme is ………..
a) DNA polymerase   
b) ligase
c) RNA polymerase
d) amino-acyl transferase 

c

According to the central dogma of gene expression, genetic information flow down into……and then convert into……
a) t-RNA-----protein
b) protein------m-RNA
c) m-RNA-----protein           
d) protein------t-RNA

c

Explanation: central dogma of gene expression: DNAàm-RNAàprotein


The process in which an m-RNA copy of the DNA sequence encoding the gene is called………
a) replication              
b) transformation
c) transcription         
d) translation

c

Transcription is carried out with the help of enzyme……….
a) DNA polymerase-I 
b) DNA polymerase-III
c) DNA polymerase-II
d) RNA polymerase

d

The process of transcription is completed in how many phases?
a) two
b) three          
c) four
d) six

b

Explanation: initiation phase, elongation phase and termination phase



Transcription begins with the binding of RNA polymerase at………..region.
a) sense strand           
b) anti-sense strand
c) promoter               
d) whole DNA

c

Explanation: promoter is a regulatory region of the gene which provides binding sites for the RNA polymerase.



Contents Details