
PCR and DNA Replication Concepts
Interactive Video
•
Biology, Science, Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the significance of the 3' and 5' ends in DNA replication?
They are used to identify the origin of replication.
They are involved in the formation of hydrogen bonds.
They are responsible for the stability of the DNA helix.
They determine the direction of DNA synthesis.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which enzyme is responsible for adding nucleotides to the new DNA strand during replication?
Helicase
DNA Polymerase
Ligase
Primase
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of ligase in DNA replication?
It adds nucleotides to the leading strand.
It synthesizes RNA primers.
It joins Okazaki fragments on the lagging strand.
It unwinds the DNA helix.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is ATP necessary for DNA replication?
It stabilizes the DNA double helix.
It acts as a primer for DNA synthesis.
It is used to synthesize nucleotides.
It provides energy for the unwinding of DNA.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of PCR?
To sequence DNA
To amplify DNA
To repair DNA
To transcribe DNA
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During PCR, what is the function of the thermal cycler?
It adds primers to the DNA strands.
It cycles through different temperatures to facilitate DNA denaturation, annealing, and extension.
It maintains a constant temperature.
It separates DNA strands using a magnetic field.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In PCR, why is it important for DNA polymerase to be heat-tolerant?
To ensure accurate base pairing.
To facilitate the binding of primers.
To prevent denaturation at high temperatures.
To increase the speed of DNA synthesis.
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