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Worksheets2.2 DNA Replication - Quiz
Total questions: 10
Worksheet time: 5mins
Identify the correct order of steps in semiconservative DN replication.
Base pairing, joining and unwinding
Base pairing, unwinding and joining
Unwinding, joining and base pairing
Unwinding, base pairing and joining
What is the main function of A?
Add nucleotides
Connects nucleotides
Proofreads DNA for errors
Unwinds original DNA strands
Which letter represents the enzyme that assembles the complementary
nucleotides?
A
B
C
D
Which statement best describes the purpose of DNA replication?
Making a new DNA molecule with different bases
Making two exact copies of the cells’ original DNA
Doubling the amount of DNA to increase the number of chromosomes
Using enzymes to break hydrogen bonds and add nucleotides to strands
DNA polymerase is classed as an enzyme that ______.
adds nucleotides
connects nucleotides
proofreads DNA for errors
All of the above
What is the role of ligase in DNA replication?
I. Insert new complementary nucleotides
II. Join Okazaki fragments
III. Unzip two DNA strands
I only
II only
III only
II and III only
Which enzymes are responsible for proofreading the DNA?
Helicase
Ligase
Polymerase (I and II)
Topoisomerase
The fragments on the lagging strand that are made up of repeating segments of DNA are called ____________.
Polymerase
Primase
Unused DNA
Okazaki fragments
The enzyme that seals (bonds) the Okazaki fragments together is __________.
Helicase
Polymerase
Ligase
Primase
The enzyme that breaks the hydrogen bonds between the two DNA strands is __________.
Helicase
Polymerase
Ligase
Primase
