1.
Post-transcriptional modifications primarily occur in which type of nucleic acid?
2.
Which of the following post-transcriptional modifications involves the addition of a protective 5' cap to mRNA?
3.
The 5' cap added to mRNA serves multiple purposes, including:
4.
Which post-transcriptional modification involves the addition of a poly-A tail to the 3' end of mRNA?
5.
The poly-A tail added to mRNA is essential for:
6.
In eukaryotes, the removal of introns and joining of exons in pre-mRNA is a crucial post-transcriptional modification called:
7.
The spliceosome is a complex of RNA and protein that carries out:
8.
Alternative splicing allows for the production of multiple protein isoforms from a single gene. What is the primary mechanism behind alternative splicing?
9.
The presence of a 3' untranslated region (UTR) in mature mRNA molecules can:
10.
Which post-transcriptional modification involves the removal of specific nucleotides from the 3' end of tRNA molecules?
11.
The addition of specific chemical groups, such as methyl groups, to RNA molecules is a post-transcriptional modification known as:
12.
The removal of the 5' cap or the poly-A tail from mRNA can lead to:
13.
In the process of RNA editing, specific nucleotides within an mRNA molecule can be altered. Which nucleotide is commonly modified in RNA editing?
14.
RNA interference (RNAi) is a post-transcriptional regulatory mechanism that involves the:
15.
Post-transcriptional modifications are crucial for regulating gene expression and generating protein diversity. Which step of gene expression primarily involves these modifications?
