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WorksheetsDNA Replication
Total questions: 15
Worksheet time: 8mins
DNA replication creates two strands of DNA from one. If pink is parental DNA and blue is new DNA - which picture demonstrates the accepted model of DNA replication after the SECOND replication cycle?
The picture below shows an enzyme unwinding and unzipping DNA.
What is the name of this enzyme?
DNA Helicase
DNA Ligase
DNA polyermase
RNA Polymerase
Which of the following DNA nucleotides are paired with the correct corresponding DNA nucleotide? (mark all that apply)
Adenine with Thymine
Guanine with Cytosine
Thymine with Cytosine
Adenine with Uracil.
Uracil with Thymine
You are given the DNA strand 5'ATGCTCAGCTGA3'. What is the corresponding DNA strand?
5'UACGAGUCGACU3'
5'TACGAGTCGACT3'
3'UACGAGUCGACU5'
3'TACGAGTCGACT5'
What is the role of DNA polymerase? (mark all that apply)
Foster hydrogen bonds
Foster phosphoester bonds
Add free nucelotides
Remove current phosphates
Stabilize the DNA strand for replication
Many enzymes are involved in DNA replication. Which is the correct order of enzymes involved in DNA replication from beginning to end?
Helicase, DNA primase, DNA polymerase, Ligase
RNA primase, Helicase, DNA polymerase, Ligase
Helicase, RNA primase, DNA polymerase, Ligase
DNA primase, Helicase, RNA polymerase, Ligase
What enzyme is responsible for the second step of DNA replication?
DNA Ligase unwinds original DNA strand
RNA Primase lays down RNA primers for new nucleotide bases.
RNA polymerase builds new strands by bringing in new nucleotide bases.
Helicase knits together fragments on lagging strand
Which is the role of DNA polymerase?
Unwinds the original DNA strand
Lays down RNA primer for new nucleotide bases.
Builds new strands by bringing in new nucleotide bases.
Remove Okazaki fragments for new nucleotides.
Which is the last step of DNA replication?
RNA Helicase unwinds original DNA strand
DNA Primase lays down RNA primer for new nucleotide bases.
RNA polymerase builds new strands by bring in new nucleotide bases.
Ligase knits together fragments on lagging strand
Which letter in the picture below depicts the leading strand in DNA replication?
A
C
B
None of the above
Which letter in the picture below depicts the lagging strand in DNA replication?
Letter A since it is copied from 5' to 3'
Letter A since it is copied from 3' to 5'
Letter B since it is copied from 3' to 5
Letter B since it is copied from 5' to 3'
Which letter in the given picture depicts the okazaki fragments?
A - lagging strand
C - leading strand
B - lagging strand
C - replication fork
DNA replication puts down nucleotides ______' to _____' and is said to be ______________________
5, 3, antiparallel
3, 5, antiparallel
5, 3, parallel
3, 5, parallel
DNA replication takes place in eukaryotic cells during which phase?
G1
S
M
G0
Based on the given data table of two bacteria, which of the following statements are true? (mark all that apply)
S. pneumoniae has the most thymine in its nucleus.
Both bacteria have less guanine than adenine.
S. pneumoniae's amount of cytosine is more similar to guanine than thymine.
E. coli's greatest amount of nitrogen bases is adenine.
