DNA Replication

What is the primary reason for DNA replication in multicellular organisms?

• To produce gametes for sexual reproduction

• To repair damaged cells and tissues

• To ensure each new cell receives a complete set of genetic material

• To allow for genetic variation within a species

During which phase of the eukaryotic cell cycle does DNA replication occur?

• G1 phase

• S phase

• G2 phase

• M phase

The Meselson-Stahl experiment provided evidence for which model of DNA replication?

• Conservative

• Dispersive

• Semi-Conservative

• Random

What term describes the orientation of the two strands in a DNA double helix?

• Parallel

• Anti-parallel

• Perpendicular

• Convergent

What is the primary function of helicase during DNA replication?

• Unwinding the DNA double helix

• Adding new nucleotides to the growing strand

• Joining DNA fragments together

• Synthesizing short RNA primers

In which direction does DNA polymerase add new nucleotides to a growing DNA strand?

• From the 5' end towards the 3' end of the template strand

• From the 3' end towards the 5' end of the new strand

• From the 5' end towards the 3' end of the new strand

• From the 3' end towards the 5' end of the template strand

Which enzyme is responsible for connecting the Okazaki fragments on the lagging strand after RNA primers are removed?

• DNA primase

• Helicase

• DNA ligase

• DNA polymerase

How do the origins of DNA replication differ between prokaryotic and eukaryotic organisms?

• Prokaryotes have multiple origins, while eukaryotes have a single origin.

• Eukaryotes have multiple origins, while prokaryotes have a single origin.

• Both prokaryotes and eukaryotes have a single origin.

• Both prokaryotes and eukaryotes have multiple origins.