(2) Circle below to indicate which of the following statements about splicing ar
ID: 141026 • Letter: #
Question
(2) Circle below to indicate which of the following statements about splicing are RUE. (a) Splicing takes place in the cytoplasm of eukaryotes. (b) Small nuclear RNAs play a critical role in splicing. (c) Alternative splicing in E. coli enables its small genome to produce many distinct proteins (d) Splicing factors associate with the carboxy terminal domain (CTD) of RNA polymerase I. (e) Splicing can only take place once the entire transcript has been synthesized. (0) The spliceosome uses specific sequences in the transcript to recognize introns. 2 points Give an example of a class of functional RNA molecule that would be found in both prokaryotes and eukaryotes (3) [1 pointExplanation / Answer
Hi Answer:
The explanation is given only on those parts which are False.
1. splicing takes place in the cytoplasm of eukaryotes (False)
Explanation: Splicing is the process of removing the introns in case of eukaryotes it took place within the nucleus either during the transcription or immediately after transcription.
2. Small nuclear RNAs play a critical role in splicing (True)
3. Alternative splicing in E.coli enables its small genome to produce many distinct proteins. (False)
Explanation: Its true that the alternative splicing enables small genome to produce many distinct proteins but this alternative splicing is only found in the eukaryotic cells and viruses. As E.coli is prokaryote it does not have alternative splicing.
4.Splicing factors associate with the carboxy terminal domain (CTD) of RNA polymerase II. (True)
5. Splicing can only take place once the entire transcript has been synthesized (True)
6. The spliceosome uses specific sequences in the transcript to recognize introns. (True)
(3) Give an example of a class of functional RNA molecule that would be found in both prokaryotes and eukaryotes.
Answer: mRNA, tRNA and rRNA
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