Which snRNP leaves in order to form the active spliceosome? OU1 U3 OU4 U2
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- Which of the following introns are usually removed from hnRNA only by spliceosomes? A. non-transcribed spacers B. Type II introns C. viroids D. Type I introns E. hammerhead ribozymesAn hnRNA molecule contains three exons, with the middle one being an “alternative” exon. How many different mRNA molecules can be produced from this hnRNA molecule?What is the function of the spliceosome in hnRNA?
- Which of the following are elongation factors involved in the release of free tRNAs? a.EF-G b.EF-Ts c.EF-Tu d.EF-PGiven the following mRNA sequence, what is the amino acid sequence of the polypeptide that will be produced in the cell? 5’ – CGAGGUAUGCCAACGUGCGUCUAAUCCCGA-3Why nonhomologous end-joining (NHEJ) is helpful ?
- Put the following processes in order of their occurrence during expression of a eukaryotic gene: a. mRNA processing c. transcription b. translation d. RNA leaves nucleusWhich type of splicing reaction requires a guanine nucleoside or nucleotide cofactor that is not used as a source of energy?a) Spliceosomalb) Group Ic) Group IId) Group IVWhich of the events are special and only occur in prophase 1?
- YFP-SC35 encodes a splicing factor. You would expect this molecule to be localized in what compartment of the cell? nucleoli nucleus cytoplasm mitochondriaIn 3-4 sentences each Explain the difference between an intron and an exon? Explain what happens when eIF-2 is phosphorylated and when it is not phosphorylated?By means of a flowchart, show the possible jumps that a transposoncan make. Show the involvement of viruses in its movement.