WorksheetsDNA Replication
Total questions: 15
Worksheet time: 8mins
Which of the following correctly pairs the DNA replication enzyme with its function
Topoisomerases work ahead of the replication fork to prevent supercoiling.
DNA polymerase I opens up the DNA at the replication fork.
Helicase seals gaps between DNA fragments.
DNA primase extends primers by adding nucleotides to the 3'3′3, prime end.
The method of DNA replication is known as:
Dispersive
Semi-conservative
Conservative
Complementary
The enzyme used to separate the double helix into 2 single strands is:
Nuclease
Primase
Helicase
DNA polymerase III
Bacterial chromosome....
has linear DNA
located inside nucleus
associates with large amount of proteins
has circular DNA
In a semi-conservative model of DNA replication, which of the following is true?
The daughter DNA molecule consists of 2 parent strands
The daughter DNA molecule consists of an uneven mix of old and new strands
The daughter DNA molecule consists of 1 parent strand and 1 new strand
The daughter DNA molecule consists of 2 newly formed strands
In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of
Cytosine
Guanine
Thymine
Uracil
What prevents DNA strands from reannealing at the replication fork?
Helicase
Topoisomerase
Ligase
Single-stranded binding proteins
Which enzyme joins together Okazaki fragments?
DNA pol I
Helicase
Ligase
Primase
The DNA sequence of the parent strand is 5'-ATGCTCAGCT-3'. What is the sequence of the daughter strand?
3'-UACGAGUCGA-5'
5'-UACGAGUCGA-3'
3'-TACGAGTCGA-5'
5'-TACGAGTCGA-3'
In what phase of the cell cycle does DNA replication take place?
G1
G2
S
M
Which template strand(s) will be used to synthesize new DNA strand(s) in short fragments
A
B and C
A and D
D
Which of the following is NOT true about DNA polymerase III?
Replaces RNA primer at the lagging strand with DNA nucleotide
Requires short primer before adding the new DNA nucleotide
Adds DNA nucleotide at a free 3' end of an existing chain
Cannot initiate synthesis of a new DNA strand
Why would it be important to replicate DNA before a cell divides in mitosis or meiosis?
In order for the DNA to be contained in the nucleus.
In order for the cell to re-order the DNA sequencing in the new cells.
In order for the cell to be able to increase in size.
In order for genetic information to be transferred into daughter cells.
Which of the following is correct with respect to DNA replication?
Enzyme Helicase is used to stabilize the ssDNA
Enzyme DNA Pol. I is the main polymerizing enzyme
Enzyme ligase is used to employ RNA primers
Okazaki fragments are made up of deoxynucleotides
The last stage of chromatin packing produces...
nucleosome
histones
looped domain
metaphase chromosome
