DNA Replication

Why does DNA stay in the nucleus?

• To protect it from becoming damaged.

• To allow for easier replication.

• To facilitate protein synthesis.

• To prevent it from being transcribed.

What do the lines between the nitrogen-containing bases in DNA represent?

• Covalent Bonds

• Ionic Bonds

• Hydrogen Bonds

• Peptide Bonds

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

• DNA consists of two identical strands that are completely new.

• DNA consists of half an old strand and half a new strand and the code stays conserved.

• DNA is replicated in a way that only one strand is copied.

• DNA replication occurs without any template strand.

What enzyme glues the Okazaki fragments together during DNA replication?

• Polymerase

• Helicase

• Ligase

• Primase

What is the function of ligase in DNA replication?

• It unwinds the DNA double helix.

• It connects Okazaki fragments on the lagging strand by forming phosphodiester bonds.

• It synthesizes RNA primers for DNA replication.

• It proofreads the newly synthesized DNA strands.

What is the end result of DNA replication?

• Two identical DNA molecules, each consisting of one old strand and one new strand.

• One single DNA molecule with two new strands.

• Two completely different DNA molecules.

• A mixture of old and new DNA strands without any specific structure.

What is the role of topoisomerase in DNA replication?

• It synthesizes new DNA strands.

• It alleviates the torsional strain ahead of the replication fork by cutting and rejoining the DNA strands.

• It unwinds the DNA double helix.

• It adds RNA primers to the DNA strands.

What role does DNA polymerase play in DNA replication?

• It synthesizes new DNA strands by adding nucleotides complementary to the template strand.

• It unwinds the DNA double helix to allow replication.

• It repairs damaged DNA strands after replication.

• It initiates the transcription of RNA from the DNA template.

What is the function of helicase in DNA replication?

• It synthesizes new DNA strands.

• It unzips the DNA to prepare for replication.

• It repairs damaged DNA.

• It adds RNA primers to the DNA strands.

What is the role of primase in DNA replication?

• It synthesizes a short RNA primer to provide a starting point for DNA synthesis.

• It unwinds the DNA double helix to allow replication.

• It removes RNA primers after DNA synthesis is complete.

• It adds nucleotides to the growing DNA strand during replication.