DNA Replication Quiz

What is the main reason the lagging strand is synthesized in fragments during DNA replication?

• The lagging strand is more prone to mutations.

• The lagging strand is shorter than the leading strand.

• DNA polymerase can only add nucleotides to the 3' end.

• DNA polymerase can only add nucleotides to the 5' end.

Which enzyme is responsible for unwinding the DNA double helix during replication?

• Ligase

• Helicase

• Primase

• DNA polymerase

What is the role of primase in DNA replication?

• It unwinds the DNA strands.

• It synthesizes RNA primers.

• It connects Okazaki fragments.

• It adds nucleotides to the DNA strand.

What are Okazaki fragments?

• Short DNA sequences on the leading strand

• Short DNA sequences on the lagging strand

• Short DNA sequences that repair mutations

• Short RNA sequences synthesized by primase

Which enzyme is responsible for connecting Okazaki fragments on the lagging strand?

• DNA polymerase

• Primase

• Helicase

• DNA ligase