DNA Replication Quiz

During which phase of the cell cycle does DNA replication occur to ensure even distribution between daughter cells?

• M phase

• G2 phase

• S phase

• G1 phase

What is the role of DNA helicase in the process of DNA replication?

• It synthesizes new DNA strands.

• It unzips the double helix by breaking hydrogen bonds.

• It joins Okazaki fragments.

• It adds nucleotides to the growing DNA strand.

Which enzyme is responsible for adding new nucleotides during DNA replication?

• RNA polymerase

• DNA polymerase

• DNA ligase

• DNA helicase

What is the function of DNA ligase in DNA replication?

• It synthesizes RNA primers.

• It unwinds the DNA double helix.

• It seals gaps between Okazaki fragments.

• It removes RNA primers.

What does semi-conservative replication mean in the context of DNA replication?

• Each new DNA molecule has two original strands.

• Each new DNA molecule is completely new.

• Each new DNA molecule has two new strands.

• Each new DNA molecule has one original and one new strand.