DNA Structure and Replication

Quiz
•
Science
•
9th Grade
•
Medium
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15 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the role of DNA ligase in DNA replication?
DNA ligase unwinds the DNA helix.
DNA ligase synthesizes new DNA strands.
DNA ligase joins Okazaki fragments on the lagging strand.
DNA ligase removes RNA primers from the DNA.
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the shape of DNA?
Single helix
Double helix (twisted ladder)
Circular
Linear
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What are the building blocks of DNA?
Amino Acids
Nucleotides
Fatty Acids
Monosaccharides
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What enzyme unwinds and unzips DNA during replication?
DNA Polymerase
DNA Ligase
DNA Helicase
RNA Primase
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What enzyme is responsible for adding the free nucleotides to the replicating DNA?
RNA polymerase
DNA ligase
DNA polymerase
Helicase
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the significance of complementary base pairing in DNA?
It ensures accurate replication and transcription of genetic information.
It allows for the formation of hydrogen bonds between nucleotides.
It determines the physical structure of the DNA molecule.
It facilitates the repair of damaged DNA strands.
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the difference between leading and lagging strands in DNA replication?
The leading strand is synthesized continuously, while the lagging strand is synthesized in short segments.
Both strands are synthesized continuously.
The leading strand is synthesized in short segments, while the lagging strand is synthesized continuously.
The leading strand is synthesized in the opposite direction of the lagging strand.
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