Which of the following are the enzymes involved in post-transcriptional modification? Question 50 options: RNA polymerase and spliceosomes none of the options are correct RNA polymerase and poly-A polymerase RNA polymerase, poly-A polymerase, and spliceosomes poly-A polymerase and spliceosomes
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Which of the following are the enzymes involved in post-transcriptional modification?
Question 50 options:
|
RNA polymerase and spliceosomes |
|
none of the options are correct |
|
RNA polymerase and poly-A polymerase |
|
RNA polymerase, poly-A polymerase, and spliceosomes |
|
poly-A polymerase and spliceosomes |
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- Question 14 A large RNA–protein complex responsible for RNA splicing is called: Question 14 options: Spliceosome Splicing complex Exon-intron processor Transcription complex Question 15 Shortly after transcriptional initiation by RNA polymerase II, a methylated nucleoside (7-methylguanosine, m7G) is added and linked by a 5′–5′ phosphodiester bond to the first 5′ nucleotide, What is this process called? Question 15 options: 3' Capping 5' Capping Polyadenylation Splicing Question 16 During polyadenylation, the RNA is cleaved at a specific site. The site is: Question 16 options: 15–30 nucleotides downstream of the AAUAAA sequence 15–30 nucleotides upstream of the AAUAAA sequence at AAUAA sequence At…are responsible for transcription in both prokaryotes and eukaryotes. Question 17 options: DNA-dependent DNA polymerases DNA-dependent RNA polymerases RNA-dependent DNA polymerases RNA-dependent RNA polymerasesa QUESTION 7 Please read the paragraph regarding transcription termination and fill in the blanks with words from the word bank below (not all of the words will be used): Rat1 ATP Adenosine AAUAAA Rho TATA A-site RNA polymerase Uracil Rut site Guanosine Hairpin There are two known mechanisms of transcription termination in prokaryotes. One mechanism requires a protein complex called This protein complex binds to the which is located on the RNA that is being transcribed. This protein complex then moves toward the stalled RNA polymerase complex and unwinds the RNA from the DNA. A second mechanism for termination in prokaryotes requires an RNA termination sequence that contains a secondary structure called a followed by a string of nucleotides. Transcription termination for RNA Polymerase II in eukaryotes happens when the termination consensus sequence, is transcribed leading to cleavage of the mRNA 11-30 nucleotides downstream of the termination sequence. Once cleavage occurs, binds to…
- How are introns recognized by snRNPs?Question 17 options: CTD of RNA polymerase II binds to cis-elements in the introns proteins bind to the major groove base-pairing between snRNAs and cis-elements in the intronsWhich of the following is intervening sequence? Question 7 options: The sequence that precedes the transcription initiation site The sequence that bind to transcription factors The sequence that encode amino acids in eukaryotic organisms The sequence that eukaryotic genes contain and are missing from mature mRNAWhich of the following molecules molecule is directly involved in the Methylation reactions and for the successful capping of nascent RNA molecules? Question 32 options: Cysteamine Methionine S-Adenosine-Methionine (S-Ado-Met) Methylamine Homocysteine
- Question 3 Review transcription. Match the term and its description. Each term can only be used once. RNA synthesis is catalyzed by this enzyme called | Choose ) The DNA sequence where RNA polymerase attaches is called | Choose | In bacteria, the sequence signaling the end of transcription is called | Choose J The stretch of DNA that is transcribed is called | Choose | These factors mediate the binding of RNA polymerase and the | Choose initiation of transcription > > >Transcription factors bind to: Question 20 options: DNA regions called cis-acting elements RNA regions called trans-acting factors DNA regions called trans-acting elements RNA regions called trans-acting elements RNA regions called cis-acting elementsQUESTION 3 Indicate the statements that correctly apply to snRNA molecules: O Contains an anticodon O Contains a 5'UTR O Translated into protein O Transcribed in the 5 to 3' direction O Major component of ribosomes O Classified as "functional RNA" O Component of spliceosomes QUESTION 4 Indicate the statements that correctly apply to FRNA molecules: O Classified as "functional RNA" O Component of spliceosomes O Transcribed in the 5 to 3' direction O Translated into protein O Contains an anticodon O Major component of ribosomes O Contains a 5'UTR
- Mutated DNA Sequence #3 T A C A C C T T A G C G A C G A C T … What’s the mRNA sequence? (Circle the change) What will be the amino acid sequence? Will there likely be effects? What type of mutation is this? ________________________________ Mutated DNA Sequence #4 T A C A C C T T G G C G A C T A C T … What’s the mRNA sequence? (Circle the change) What will be the amino acid sequence? Will there likely be effects? What type of mutation is this? ______________________________Question 1 I . Protein Synthesis – complete the chart for this coding region of a gene. DNA sense ATG AAA CGA GTT ACC GAA ACT TAA DNA nonsense mRNA codon tRNA anticodon Amino acidThe diagram below depicts an active transcription bubble after a short period of RNA synthesis during the transcription process of a prokaryotic gene. Redraw the diagram and label parts (i) to (v) on the diagram. Motivate your answers. (i) the template and the non-template strands; (ii) the orientation (direction) of both DNA strands and that of the newly synthesised RNA strand; (iii) the location of a possible promotor sequence; (iv) the location of a possible Shine-Dalgarno sequence; (v) the specific area of activity of a RNA polymerase.