DNA Replication and Transcription Quiz

What is the role of DNA helicase in DNA replication?

• To break hydrogen bonds between complementary bases

• To synthesize RNA primers

• To add nucleotides to the growing DNA strand

• To seal gaps between Okazaki fragments

Which strand is synthesized continuously during DNA replication?

• Lagging strand

• Leading strand

• Okazaki strand

• Template strand

What is the function of RNA polymerase during transcription?

• To add nucleotides to the DNA strand

• To remove RNA primers

• To synthesize mRNA from a DNA template

• To unwind the DNA double helix

What are Okazaki fragments?

• Short fragments of RNA

• Fragments of mRNA

• Long continuous DNA strands

• Short fragments of DNA synthesized on the lagging strand

In which direction does RNA synthesis occur?

• 3' to 3'

• 3' to 5'

• 5' to 3'

• 5' to 5'

What is the purpose of DNA replication?

• To synthesize proteins directly

• To break down DNA

• To create an exact copy of the DNA molecule

• To create mRNA for protein synthesis

Which enzyme is responsible for sealing gaps between Okazaki fragments?

• RNA polymerase

• DNA ligase

• RNA primase

• DNA polymerase

What is the product of transcription?

• Double-stranded RNA

• Single-stranded mRNA molecule

• Two identical DNA molecules

• Protein

What is the role of the promoter in transcription?

• To unwind the DNA

• To synthesize RNA

• To specify where transcription begins

• To terminate the transcription process

Which of the following is NOT a difference between DNA replication and transcription?

• Type of nucleotides used

• Location of the process

• Enzymes involved

• Purpose of the process