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Which of the following enzyme removes super coiling replicating DNA ahead of the replication fork?
a) topoisomerase       
b) primase
c) DNA polymerase   
d) helicase

a

Which of the following enzyme breaks down the base pairs of DNA so the two strands gradually separate?
a) DNA gyrase           
b) DNA helicase
c) DNA polymerase-I
d) DNA polymerase-III

b

Unwinding of DNA is done by………
a) DNA gyrase           
b) DNA helicase
c) DNA polymerase-I
d) DNA polymerase-III

b

………enzyme is DNA dependant RNA polymerase.
a) primase                  
b) DNA helicase
c) DNA polymerase-I 
d) DNA polymerase-III

a

Which of the following prevents the separated DNA base pairs during DNA replication?
a) single stranded binding (SBB)    
b) primase                  
c) DNA polymerase-I                         
d) DNA polymerase-III

a

Explanation: Single-strand DNA-binding protein (SSB) is a protein found in Escherichia coli (E. coli) bacteria, that binds to single-stranded regions of deoxyribonucleic acid (DNA)


Specific chromosomal locations from where replication begins are called as…
a) loci             
b) origin of replication
c) locus                       
d) chromosomal arm


b

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