Which process is responsible for stabilizing mature eukaryotic mRNA and aiding its export from the nucleus?
Show answer and explanation
Correct answer: Addition of the 5′ cap together with the 3′ poly-A tail
Both the 5′ cap and the 3′ poly-A tail protect mature mRNA from degradation and promote its export from the nucleus to the cytoplasm. Splicing and tRNA charging do not perform this role, and the cap is retained, not removed.
Keep practicing
More Transcription and Translation questions
- Which of the following accurately reflects a difference between eukaryotic and prokaryotic gene expression?
- What happens to the σ factor of bacterial RNA polymerase after initial transcription initiation?
- Which enzyme is primarily responsible for synthesizing pre-mRNA from DNA in eukaryotic cells?
- Which of the following correctly describes the order of major stages of transcription?
- During eukaryotic mRNA processing, what modification is added to the 5′ end of the nascent transcript soon after initiation?
- In prokaryotes, what feature of their mRNA allows expression of multiple proteins from a single transcript?