DNA replication

What is DNA replication?

• The process of breaking down DNA into its individual nucleotides.

• The process in which a cell's entire DNA is copied.

• The process of creating new DNA from RNA.

• The process of breaking down RNA into its individual nucleotides

Tags

NGSS.HS-LS3-2

Which enzyme breaks the hydrogen bonds holding the two DNA strands together during DNA replication?

• DNA Polymerase

• Topoisomerase

• DNA Helicase

• Primase

In which direction does DNA polymerase construct the leading strand?

• 5'>3'

• 3'>5'

• randomly in both locations

• it does not build the leading strand

Where is the lagging strand located in realtion to the replication fork?

• At the same side as the leading strand.

• Opposite side of the replication fork from the leading strand.

• It does not exist in relation to the replication fork.

• Parallel to the replication fork.

Which enzyme builds a new DNA strand during DNA Replciation?

• DNA Polymerase

• DNA Helicase

• Topoisomerase

• Primase

What is the role of Primase in DNA replication?

• It breaks the hydrogen bonds holding the two DNA strands together

• It builds a new DNA strand during replication

• It relieves the tension that causes the DNA to twist into a helix structure

• It builds a short RNA primer on the lagging strand

What are Okazaki fragments?

• a. Fragments of RNA that comprise the leading strand

• b. Short fragments of DNA that comprise the leading strand

• c. Fragments of RNA that comprise the lagging strand

• d. Short fragments of DNA that comprise the lagging strand

What is the size of Okazaki fragments?

• a. They can vary in size

• b. They are always 100 nucleotides long

• c. They are always 1000 nucleotides long

• d. They are always 10,000 nucleotides long

Are Okazaki fragments found in the leading or lagging strand?

• a. Leading strand

• b. Lagging strand

• c. Both the leading and lagging strands

• d. They are not found in either the leading or lagging strand

Why are Okazaki fragments necessary during DNA replication?

• a. To break the hydrogen bonds holding the two DNA strands together

• b. To relieve the tension that causes the DNA to twist into a helix structure

• c. To create a new DNA strand during replication

• d. To create a continuous complementary strand on the lagging strand.