E. prokaryotes have to worry about unpackaging the DNA for transcription, while
ID: 254093 • Letter: E
Question
E. prokaryotes have to worry about unpackaging the DNA for transcription, while eukaryotes have almost naked DNA not bound up by nucleosome
1. What are the three processes in post-transcriptional processes that must be completed before transcripts can be translated in eukaryotes? A. Binding of snRNPs, addition of a poly A tail, splicing of introns B. Binding of snRNPs, transporting, synthesizing of ribose C. Capping, transporting, synthesizing of ribose D. Binding of snRNPs, capping, splicing E. Capping, splicing, addition of a poly A tailExplanation / Answer
1) A ; C ; D are true and B; E are false because prokaryotic transcription is carried out by 1 RNA polymerase not of eukaryotes and eukaryotes possess nucleosome while the prokaryotes possesa naked dna present in cytoplasm
2) capping , splicing , addition of poly A tail is required .After transcription capping that is the addition of 7 methyl guanine takes place at 5' end and poly Adenine are added at 3 ' end and makes mrna circular these events preventa mrna from being damage and then introns are spliced out as they are non coding part and mature mrna is formes which is translated into protein.
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