Podcast
Questions and Answers
What is the function of the 5' cap in eukaryotic mRNAs?
What is the function of the 5' cap in eukaryotic mRNAs?
- Protects RNA from degradation by ribosomes
- Signals the start of translation by forming a binding site for the ribosome (correct)
- Initiates translation by binding to the nucleus
- Stabilizes the mRNA by forming a binding site for mitochondria
What is the linkage between 7-Methylguanosine and the 5' end of almost all eukaryotic mRNAs?
What is the linkage between 7-Methylguanosine and the 5' end of almost all eukaryotic mRNAs?
- 5'-5' triphosphate linkage (correct)
- 3'-5' phosphodiester linkage
- 3'-3' triphosphate linkage
- 5'-3' phosphodiester linkage
What does the presence of introns in genes signify?
What does the presence of introns in genes signify?
- They are only found in bacteria
- They prevent gene expression
- They are present in most genes in vertebrates and some in yeast (correct)
- They stabilize mRNA molecules
Where is the capbinding complex (CBC) associated during the synthesis of the 5' cap?
Where is the capbinding complex (CBC) associated during the synthesis of the 5' cap?
What is one of the post-transcriptional processes involved in RNA processing?
What is one of the post-transcriptional processes involved in RNA processing?
When does the addition of a 5'-cap occur in eukaryotic cells occur?
When does the addition of a 5'-cap occur in eukaryotic cells occur?
What is the function of splicing in post-transcriptional RNA processing?
What is the function of splicing in post-transcriptional RNA processing?
Where does processing of eukaryotic mRNA take place?
Where does processing of eukaryotic mRNA take place?
What are the three main processes involved in forming mature mRNA from a primary transcript in eukaryotes?
What are the three main processes involved in forming mature mRNA from a primary transcript in eukaryotes?
What is the function of a 3’-poly(A) tail in mRNA processing?
What is the function of a 3’-poly(A) tail in mRNA processing?
Where does splicing occur during post-transcriptional RNA processing in eukaryotes?
Where does splicing occur during post-transcriptional RNA processing in eukaryotes?
Which process of RNA processing involves removing introns and joining exons together?
Which process of RNA processing involves removing introns and joining exons together?
When does the addition of a 5' cap to eukaryotic mRNAs typically occur?
When does the addition of a 5' cap to eukaryotic mRNAs typically occur?
What is the source of methyl groups often found at the 2' position of the first and second nucleotides in eukaryotic mRNAs?
What is the source of methyl groups often found at the 2' position of the first and second nucleotides in eukaryotic mRNAs?
Which complex is associated with the capbinding complex (CBC) during the synthesis of the 5' cap?
Which complex is associated with the capbinding complex (CBC) during the synthesis of the 5' cap?
What is the role of introns in most genes in vertebrates?
What is the role of introns in most genes in vertebrates?
What post-transcriptional modification is involved in removing introns from pre-mRNA in eukaryotes?
What post-transcriptional modification is involved in removing introns from pre-mRNA in eukaryotes?
What is the function of methylguanosine at the 5' end of eukaryotic mRNAs?
What is the function of methylguanosine at the 5' end of eukaryotic mRNAs?
