Which one of the following amino acids is phosphorylated during the process of promoter clearance by eukaryotic RNA polymerase II? threonine Otyrosine serine proline
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- Which step in the processing of heterogeneous nuclear RNA (in eukaryotes), into mature messenger RNA, is required for proper attachment of the small ribosomal subunit to the mature mRNA molecule? polyadenylation at the 3’ end 7-methyl-guanosine capping at the 5’ end excision of introns formation of quadruple-stranded DNA splicing of exonsWhich of the following amino acids is carried by the tRNA that initiates translation in eukaryotes? a.Tryptophan b.Leucine c.Methionine d.AlanineHemophilia in the Russian royal family was caused by defective protein involved in blood clotting (factor IX). This defective protein was caused by a mutation that altered the splicing of the exons. This genetic change in the splicing pattern created a new stop codon in the mRNA for factor IX. What effect on the polypeptide chain of factor IX would this new stop codon have?
- Which of the following amino acids is carried by the tRNA that initiates translation in eukaryotes? A. Alanine B. Methionine C. Tryptophan D. LeucineWhich RNA processing event is facilitated by Serine 5 phosphorylation of RNA Polymerase II? Options: splicing RNA export polyadenylation recruitment to the Mediator condensate cappingThe exact start site for protein synthesis on the mRNA is AUG and base pairs with a tRNA carrying the amino acid methionine. ture or false
- The following statements best describes the RNA structure EXCEPT it is usually single stranded there are three predominant forms for protein synthesis the repeating units are deoxyribonucleotides some eukaryotic RNAs stay in the nucleus to help in post transcriptional modificationThe transcriptional complement of the DNA strand with the code 3’ TAA-CAT-GCT 5’ isRNA polymerase in Escherichia coli normally synthesizes all of the following molecules except: RNA primers during DNA replication messenger RNA (mRNA) transfer RNA (tRNA) ribosomal RNA (rRNA) heterogenous nuclear RNA (hnRNA)
- Enzymes in which the catalytic portion is not made of protein include all of the following except: the large ribosomal subunit self-splicing introns peptidyl transferase infectious viroids tRNA synthetaseIn prokaryotes, transcription and translation occur ________. simultaneously simultaneously in physically separate locations in physically separate locations in reverse order compared to eukaryotesTrue or False The unique stem-loop structures of the transfer RNA helps the RNA perform its function of joining ribosomal proteins to form the sites for protein synthesis.
