U6 Quizizz Understanding DNA Replication

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Where does DNA replication occur in a eukaryotic cell?

• In the cytoplasm

• In the nucleus

• On the cell membrane

• In the mitochondria

What is the function of helicase in DNA replication?

• It builds new strands of DNA

• It glues DNA fragments together

• It unzips the two strands of DNA

• It replaces primers with DNA bases

Which enzyme is responsible for building a new strand of DNA?

• Ligase

• Primase

• DNA Polymerase

• Helicase

What is the role of primase in DNA replication?

• It seals Okazaki fragments

• It makes RNA primers

• It unwinds the DNA

• It proofreads the new DNA strand

Why are Okazaki fragments formed?

• Because DNA polymerase can only build in the 5’ to 3’ direction

• Because helicase unwinds the DNA too quickly

• Because ligase works only on the leading strand

• Because primase makes RNA primers too slowly

What prevents the DNA strands from rejoining during replication?

• Okazaki fragments

• RNA Primers

• SSB Proteins

• DNA Polymerase

What is the significance of DNA being anti-parallel?

• It allows for the continuous replication of both strands

• It facilitates the formation of hydrogen bonds between bases

• It prevents the DNA from unwinding

• It ensures accurate proofreading

Which enzyme has proofreading ability during DNA replication?

• Primase

• Ligase

• DNA Polymerase

• Helicase

What is the role of ligase in DNA replication?

• It glues DNA fragments together

• It replicates DNA molecules

• It synthesizes RNA primers

• It unwinds the DNA helix