DNA Transcription Quiz

What is the first step in gene expression?

• Mutation

• Replication

• Transcription

• Translation

Which enzyme is involved in the process of transcription?

• Helicase

• RNA polymerase

• DNA polymerase

• Ligase

What is the function of RNA polymerase during transcription?

• Building a complementary RNA strand

• Repairing damaged DNA

• Breaking down RNA molecules

• Synthesizing DNA

What are the three stages of transcription?

• Replication, Translocation, Termination

• Elongation, Translation, Termination

• Initiation, Replication, Termination

• Initiation, Elongation, Termination

Why is transcription controlled individually for each gene?

• To increase protein production

• To regulate gene expression

• To prevent mutations

• To conserve energy

What is the difference between monocistronic and polycistronic genes?

• Number of exons

• Number of mRNA transcripts

• Number of introns

• Number of proteins translated

What is the role of terminators in the process of transcription?

• Initiating transcription

• Adding a 5' cap to the mRNA

• Pausing RNA polymerase

• Releasing the RNA transcript

What is the direction of RNA synthesis by RNA polymerase?

• 5' to 3'

• Random

• Bidirectional

• 3' to 5'

How does RNA polymerase know where to start transcription on the DNA strand?

• By binding to a promoter region

• By recognizing the 5' cap of the mRNA

• By randomly attaching anywhere on the DNA

• By the presence of a terminator sequence

What is the primary function of the 5' cap in mRNA?

• It signals the termination of transcription

• It aids in the export of mRNA from the nucleus

• It assists in ribosome binding during translation

• It prevents degradation of the mRNA