RNA Processing
About the Lecture
The lecture RNA Processing by Kevin Ahern, PhD is from the course RNA and the Genetic Code.
Included Quiz Questions
Eukaryotic mRNAs differ from prokaryotic mRNAs in what way?
- They occasionally undergo splicing.
- They contain a poly-A tail at the 5’ end.
- They use a different genetic code.
- They lack a cap.
- The 5' end of tRNA is a CCA sequence.
Which statement is not true regarding RNA processing?
- In eukaryotic cells, the mRNA does not require any chemical modifications, whereas in prokaryotic cells the polycistronic mRNA needs splicing before translation.
- The poly-A tail in the mRNA at the 3’ end helps in transportation from the nucleus to the cytoplasm and provides stability.
- The AAUAA sequence in the 3’ end of the immature mRNA molecule acts as a signal for chopping off and the addition of poly-A tail to form a mature mRNA.
- The capping process involves the addition of 7-methylguanosine to 5’ end of the mRNA.
- The addition of a cap at 5’ end of mRNA helps in starting the translation process and protects mRNA from nuclease attack.
Which type of linkage occurs with the addition of 7-methylguanosine to mRNA?
- 5’ to 5’ linkage
- 3’ to 5’ linkage
- 5’ to 3’ linkage
- 5’ to 1’ linkage
- 3’ to 1’ linkage
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Author of lecture RNA Processing
Kevin Ahern, PhD
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