29: DNA Replication

Why is DNA replication necessary during cell division?

• To create new proteins

• To ensure the new daughter cell has a copy of DNA

• To produce energy for the cell

• To repair damaged DNA

Where does DNA replication occur in eukaryotic cells?

• In the cytoplasm

• In the nucleus

• In the ribosome

• In the mitochondria

When does DNA replication occur in eukaryotic cells?

• During mitosis

• During interphase

• During cytokinesis

• During prophase

What is the role of helicase in DNA replication?

• To glue DNA fragments together

• To unzip the DNA strands

• To build new DNA strands

• To initialize the replication process

Which enzyme is responsible for building new DNA strands?

• DNA Polymerase

• Helicase

• Ligase

• Primase

What is the function of primase in DNA replication?

• To create RNA primers

• To build new DNA strands

• To proofread the DNA

• To unzip the DNA strands

What are Okazaki fragments?

• Short RNA sequences on the leading strand

• Short RNA sequences on the lagging strand

• Short DNA sequences on the leading strand

• Short DNA sequences on the lagging strand

Why is DNA replication called semi-conservative?

• Each new DNA molecule contains two new strands

• Each new DNA molecule contains a mix of old and new strands

• Each new DNA molecule contains one old and one new strand

• Each new DNA molecule contains two old strands

What is the role of DNA polymerase in proofreading?

• It glues DNA fragments together

• It corrects errors in the DNA sequence

• It builds new DNA strands

• It unzips the DNA strands

How has the understanding of DNA replication contributed to medical treatments?

• By enhancing protein synthesis

• By stopping DNA replication in harmful cells

• By creating new vaccines

• By developing new antibiotics