Which of the following post-translation modifications cannot be classified as lipidation?

__________ is the addition of a long tail of adenine bases to an mRNA during mRNA processing, and this step is crucial for the stability of the mRNA as it gets exported to other parts of the cell.

Which of the following post-translational modifications has most typically been associated with protein degradation via activation of the cell's proteasome system?

The process of polyadenylation results in the addition of a poly-A tail to mRNA after transcription. The poly-A tail consists of approximately 150-200 adenine bases at the 3' end of the mRNA. Which of the following best describes the purpose of polyadenylation in mRNA processing?

Which of the following post-transcriptional modifications occur in the nucleus?

I. 5' capping

II. Splicing

III. Polyadenylation