36 Questions
What is the process called when each strand of DNA serves as a template for the replication of a new complementary strand?
Semiconservative replication
Which strand of the parent double helix is conserved in each new DNA molecule during replication?
One strand is conserved
What is the site called where DNA replication begins in prokaryotes?
Origin of replication
What is the length of the ori site in prokaryotes?
245 bp
What is the main reason why the ori site in prokaryotes contains A/T-rich sequences?
To make it easier to break the hydrogen bonds between base pairs
What protein binds onto the Ori site in prokaryotes during DNA replication?
DnaA
What does the DnaA protein do during DNA replication in prokaryotes?
It synthesizes new DNA strands
How many replication forks are created during DNA replication in prokaryotes?
Two
What is the shape of the replication fork during DNA replication in prokaryotes?
Y-shaped
What is the direction of replication during DNA replication in prokaryotes?
Bidirectional
Which regions of DNA are relatively weaker to break during DNA replication in prokaryotes?
A/T-rich regions
What is the role of the DnaB protein during DNA replication in prokaryotes?
It unwinds the double helix
What is the process called when each strand of DNA serves as a template for the replication of a new complementary strand?
Semiconservative replication
Which strand of the parent double helix is conserved in each new DNA molecule during replication?
One strand is conserved
What is the site called where DNA replication begins in prokaryotes?
Origin of replication
What is the length of the ori site in prokaryotes?
245 bp
What is the main reason why the ori site in prokaryotes contains A/T-rich sequences?
To make it easier to break the hydrogen bonds between base pairs
What protein binds onto the Ori site in prokaryotes during DNA replication?
DnaA
What does the DnaA protein do during DNA replication in prokaryotes?
It synthesizes new DNA strands
How many replication forks are created during DNA replication in prokaryotes?
Two
What is the shape of the replication fork during DNA replication in prokaryotes?
Y-shaped
What is the direction of replication during DNA replication in prokaryotes?
Bidirectional
Which regions of DNA are relatively weaker to break during DNA replication in prokaryotes?
A/T-rich regions
What is the role of the DnaB protein during DNA replication in prokaryotes?
It unwinds the double helix
Which of the following statements is true about DNA replication?
Only one strand of the parent double helix is conserved in each new DNA molecule.
What is the function of the ori site in prokaryotic DNA replication?
To provide a site for the binding of the replication machinery.
Why is the ori site mostly composed of A/T-rich sequences?
Because A/T-rich sequences are more easily broken than G/C-rich sequences.
What is the role of DnaA protein in DNA replication?
To bind onto the ori site and stretch the double strand DNA each other.
What is the structure created by the binding of DnaA protein to the ori site?
A replication bubble.
How many replication forks are created during DNA replication in prokaryotes?
Two replication forks.
What is the direction of replication in prokaryotes?
Bidirectional.
What is the role of RNA primers in DNA replication?
To provide a 3'-OH group for DNA polymerase to add nucleotides.
What is the function of DNA polymerase III in DNA replication?
To synthesize new DNA strands.
What is the function of DNA gyrase in DNA replication?
To relieve the tension caused by the unwinding of the double helix.
What is the role of DNA ligase in DNA replication?
To join the Okazaki fragments on the lagging strand.
What is the difference between the leading and lagging strands in DNA replication?
The leading strand is synthesized continuously, while the lagging strand is synthesized in short fragments.
Test your knowledge on DNA replication and the role of the origin of replication in prokaryotes with this informative quiz. Learn about the semiconservative nature of DNA replication and how each strand serves as a template for the replication of a new complementary strand. Discover why the ori site is rich in A/T sequences and its significance in the replication process. Get ready to expand your understanding of DNA replication with this quiz!
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