Molecular Biology Quiz

Which enzymes are involved in the formation of the replication fork?

• Topoisomerases

• Helicases, ssDNABP

• RNA primers

• DNA polymerases

What is the primary function of DNA polymerases in DNA replication?

• To form the replication fork

• To resolve supercoils

• To synthesize new DNA strands

• To terminate replication

Which enzymes are involved in replication fork formation?

• Topoisomerases

• Helicases and ssDNABP

• DNA polymerases

• Ligases

Which of the following is NOT a step in DNA replication?

• Strand separation

• Replication fork formation

• Supercoil resolution

• Protein synthesis

Which of the following is NOT a step in DNA replication?

• Strand separation

• Replication fork formation

• Supercoil resolution

• RNA transcription

What does Pol I need to form a short double-stranded region?

• All four deoxynucleotides, a template, and a primer

• Only a template and a primer

• Only deoxynucleotides and a template

• Only a primer and deoxynucleotides

What is the role of the primer in the function of Pol I?

• To pair with the template to form a short double-stranded region

• To unwind the DNA strand

• To synthesize RNA

• To repair DNA

What is the function of the polymerase in relation to incorrectly matched bases?

• It removes incorrectly matched bases so that the polymerase can try again

• It adds incorrectly matched bases to the DNA strand

• It stabilizes incorrectly matched bases

• It ignores incorrectly matched bases

What is the role of DNA ligase in DNA replication?

• It uses an RNA primer

• It forms the required primer

• It excises the primer

• It seals the "nicks" between Okazaki fragments

What is the primary function of the S phase in the cell cycle?

• Rapid growth and metabolic activity

• DNA replication and growth

• Growth and preparation for cell division

• Mitosis