RNA Transcription

What is the first step in RNA transcription called?

• Translation

• Elongation

• Termination

• Initiation

During elongation of RNA, which nucleotides are added to the growing RNA chain?

• A, U, T, and G

• A, T, C, and G

• T, U, C, and G

• A, U, C, and G

What signals the end of transcription in prokaryotic cells?

• Promoter signal in the RNA sequence

• Termination signal in the DNA sequence

• Initiation signal in the DNA sequence

• Translation signal in the mRNA sequence

Which enzyme is responsible for RNA transcription?

• ATP synthase

• DNA helicase

• RNA polymerase

• Lipase

What is the specific sequence of DNA that RNA polymerase recognizes to start transcription called?

• exon sequence

• promoter sequence

• termination sequence

• intron sequence

Name the three basic types of RNA.

• aRNA, bRNA, cRNA

• mRNA, tRNA, rRNA

• pRNA, qRNA, sRNA

• xRNA, yRNA, zRNA

What are the main differences in transcription between eukaryotic and prokaryotic cells?

• Eukaryotic cells and prokaryotic cells both have introns and exons in their mRNA.

• Eukaryotic cells do not have introns and exons in their mRNA, while prokaryotic cells have introns and exons.

• Eukaryotic cells have a nucleus where transcription occurs, while prokaryotic cells do not. Eukaryotic cells also have introns and exons in their mRNA, while prokaryotic cells do not have introns.

• Eukaryotic cells have a nucleus where transcription occurs, while prokaryotic cells have a nucleus as well.

What is the process of removing introns and joining exons in eukaryotic RNA called?

• RNA translation

• Protein synthesis

• RNA splicing

• DNA replication

What is the function of the 5' cap and poly-A tail in eukaryotic mRNA?

• Initiate translation of the mRNA

• Stabilize the mRNA and protect it from degradation

• Prevent the mRNA from leaving the nucleus

• Regulate the splicing of the mRNA

What is the enzyme responsible for unwinding the DNA double helix during transcription?

• RNA polymerase

• DNA helicase

• ATP synthase

• Ligase