Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 15, Problem 13RQ
Which pre-mRNA processing step is important for initiating translation?
- poly-A tail
- RNA editing
- splicing
- 7-methylguanosine cap
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Which one of the following options is NOT a step in RNA processing?
Addition of the 5’ G cap
Addition of the 3’ poly A tail
Splicing to remove exons and connect the retained introns
Splicing to remove introns and connect the retained exons
What is an example of RNA editing?
Changing a valine codon to a stop codon
Methylation of cytosine bases
O Formation of RISC
Alternative
splicing
If there are multiple start condo, how can you identify the real start codon?
By observing Okazaki fragments
By identifying splicing site
Using sequence data bases
By identifying Kozak sequence
Which one is not a part of the transcription unit?
RNA primase
Promoter
RNA coding sequence
Terminator
Chapter 15 Solutions
Biology 2e
Ch. 15 - Figure 15.11 A scientist splices a eukaryotic...Ch. 15 - Figure 15.13 Errors in splicing are implicated in...Ch. 15 - Figure 15.16 Many antibiotics inhibit bacterial...Ch. 15 - The AUC and AUA codons in mRNA both specify...Ch. 15 - How many nucleotides are in 12 mRNA codons? 12 24...Ch. 15 - Which event contradicts the central dogma of...Ch. 15 - Which subunit of the E. coli polymerase confers...Ch. 15 - The -10 and -35 regions of prokaryotic promoters...Ch. 15 - Three different bacteria species have the...Ch. 15 - Which feature of promoters can be found in both...
Ch. 15 - What transcripts will be most affected by low...Ch. 15 - How do enhancers and promoters differ? Enhancers...Ch. 15 - Which pre-mRNA processing step is important for...Ch. 15 - What processing step enhances the stability of...Ch. 15 - A scientist identifies a pre-mRNA with the...Ch. 15 - The RNA components of ribosomes are synthesized in...Ch. 15 - In any given species, there are at least how many...Ch. 15 - A scientist introduces a mutation that makes the...Ch. 15 - Imagine if there were 200 commonly occurring amino...Ch. 15 - Discuss how degeneracy of the genetic code makes...Ch. 15 - A scientist sequencing itiRNA identifies the...Ch. 15 - If mRNA is complementary to the DNA template...Ch. 15 - In your own words, describe the difference between...Ch. 15 - A fragment of bacterial DNA reads: 3’...Ch. 15 - A scientist observes that a cell has an RNA...Ch. 15 - Chronic lymphocytic leukemia patients often harbor...Ch. 15 - Transcribe and translate the following DNA...Ch. 15 - Explain how single nucleotide changes can have...Ch. 15 - A normal mRNA that reads 5’ -...
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- Part A Which of the following processes is represented in the figure below? A 5' ÀÚGÚÚČĞĞŮ 3' AAG UGA UUC RF1 RF2 transcription initiation translation initiation translation elongation transcription elongation translation termination O O Oarrow_forwardWhat is the eukaryotic mRNAs modification at 5' end? options: poly (A) tail. guanosine cap pseudouridine acetylated nucleotidesarrow_forwardWhich of the following enzymes is NOT utilized in mRNA degradation? MARK ALL THAT APPLY Primase Poly A Binding Protein deadenylases exoribonucleases endoribonucleasesarrow_forward
- What relates to post-transcriptional modifications 0 0 Polyadenylation Phosphorylation Acetylation 5'-capping 3'-capping Methylation ADP-ribosylation Splicing Alternative splicingarrow_forwardWhich RNA processing event is facilitated by Serine 5 phosphorylation of RNA Polymerase II? Options: splicing RNA export polyadenylation recruitment to the Mediator condensate cappingarrow_forwardWhich of the following processing events occur during or after the synthesls of MRNA molecules in eukaryotes? Intron splicing Addition of a 5'cap O Cleavage of multiple functional molecules from a larger precursor O Polyadenylation of the 3' endarrow_forward
- Which of the following is required for RNA splicing to occur? a 2´ hydroxyl group a free 5´ hydroxyl created by hydrolysis of the phosphate ester bond a cyclic phospodiester at the 3´ end of the RNA molecule the enzyme splicasearrow_forwardPlease help with thisarrow_forward015347/quizzes/5825797/take 21. The processing events that must occur on the MRNA after it is transcribed, but before it is released into the nucleus include (select all that apply) Primary RNA transcript Exon 1 Intron Exon 2 Intron Exon 3 RNA processing Spliced RNA Exon 1 Exon 2 Exon 3 AAAAAAA 5' cap Poly-A tail 3' untranslated region 5' untranslated region O folding into its functional shape O splicing out exons O adding a poly-A tail O removal of non-coding sections O capping the 5' end hparrow_forward
- he sequence is read from left to right. The table below shows which mRNA codons code for each type of amino acid. UUA - Leu | UCA - Ser UAA - Stop | UGA-Stop UUU - Phe | UCU - Ser UAU- Tyr UGU- Cys CỦA - Leu CCA - Pro CAA - Gln | CGA - ArgA UUG - Leu UCG - Ser| UAG-Stop UGG- TrpG A DNA sequence before and after replication IS SHO Second mRNA base G DNA sequence before replication: UUC - Phe UCC -Ser UAC U TACCTAGCT Туг UGC Cys DNA sequence after replication: A TACCTCGCT Leu CCU - Pro CAU - His CGU. CUU Arg U - Pro CAC - His CGC- ArgC CUC - Leu ССС Pro CAG - Gln | CGG - Arg G CUG - Leu CCG Thr AAU - Asn AGU - Ser Ile ACC - Thr AAC- Asn AGC Ile ACU AUU AUC Ser Lys AGA Arg Thr AAG - Lys AGG - AUA Ile ACA - Thr AAA- A mutation occurred in the DNA sequence during replication. Which of the following, A-D, Arg Asp GGU-Gly AUG - Met ACG GUU - Val GCU - Ala GAU - GỤC - Val GCC - Ala GAC - Asp GGC - Gly Val GCA -Ala GAA - Glu GGA - Gly Val GCG - Ala GAG-Glu GGG-Glv describes the result of the…arrow_forwardNonearrow_forwardThe sigma subunit of bacterial RNA polymerase ________________________. is required for the initiation of transcription binds to the RNA polymerase core enzyme must be released from the RNA polymerase for transcription to enter the elongation phase binds to the bacterial promoter sequence All of the other answers are correct.arrow_forward
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