Semiconservative Model of DNA Replication

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Which strand is synthesized continuously during DNA replication?

Leading strand (correct)

Both strands are synthesized continuously

Neither strand is synthesized continuously

Lagging strand

What are the short fragments called that make up the lagging strand during DNA replication?

Okazaki fragments (correct)

Polymerase chains

Primers

Replication bubbles

What enzyme replaces the RNA nucleotides of the primer on the lagging strand with DNA nucleotides?

RNA polymerase

DNA polymerase I (correct)

DNA ligase

DNA polymerase III

Which enzyme joins the sugar-phosphate backbones of Okazaki fragments in DNA replication?

DNA ligase Signup and view all the answers

During DNA replication, in which direction can a new DNA strand elongate?

$5'\rightarrow3'$ direction Signup and view all the answers

What process significantly reduces the error rate during DNA replication?

Proofreading by DNA polymerases Signup and view all the answers

What is the main characteristic of the semiconservative model of DNA replication?

It involves one old DNA strand and one new DNA strand in the replicated double helix Signup and view all the answers

What is the role of helicases in DNA replication?

Untwisting the double helix Signup and view all the answers

Which enzyme synthesizes RNA primers in DNA replication?

Primase Signup and view all the answers

What is the direction of elongation for the new DNA strand during replication?

5' to 3' Signup and view all the answers

How do DNA polymerases add nucleotides to the growing DNA strand?

Through condensation reactions Signup and view all the answers

What drives the polymerization reaction catalyzed by DNA polymerase during DNA replication?

Release of pyrophosphate Signup and view all the answers

Semiconservative Model of DNA Replication

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