What is the origin of replication site in DNA?
a) it is a protein bounded to DNA
b) it is a specific sequence of nucleotides along the length of DNA
c) it is the sequence of RNA
d) both a and b
The elongation of the leading strand
during DNA synthesis…….
a) depends on the action of DNA
polymerase
b) occurs in 3’ to 5’ direction
c) produces Okazaki fragments
d) progresses away from the replication fork
The initiation phase in DNA replication is characterized by the formation ……..
a) replication fork
b) replication bubble
c) both a and b
d) none of these
Which of the following enzyme/s work/s at origin of replication during the initiation phase of DNA replication?
a) DNA gyrase
b) DNA helicase
c) DNA polymerase
d) both a and b
Explanation: DNA gyrase also known as topoisomerase
Which of the following enzyme opens the turns of DNA duplex so the DNA is converted from spiral ladder like form to straight ladder like form?
a) DNA gyrase
b) DNA helicase
c) DNA polymerase-I
d) DNA polymerase-III
True replication of DNA is possible due to…………
a) Phosphate back bone
b) H-bond
c) complimentary base pair
d) all of these.
