Which gene regulation is ONLY present in eukaryotes? Choose from the options below Transcription and translation only occur in the cytoplasm pre-mRNA is translated to proteins Addition and removal of histones is necessary for regulating gene expression Exons are spliced from mature-mRNA in the cytoplasm Transcription and translation occur at the same time

Which gene regulation is ONLY present in eukaryotes? Choose from the options below Transcription and translation only occur in the cytoplasm pre-mRNA is translated to proteins Addition and removal of histones is necessary for regulating gene expression Exons are spliced from mature-mRNA in the cytoplasm Transcription and translation occur at the same time

Name: Which gene regulation is ONLY present in eukaryotes? Choose from the
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Description: Which gene regulation is ONLY present in eukaryotes? Choose from the options belowTranscription and translation only occur in the cytoplasm pre-mRNA is translated to proteinsAddition and removal of histones is necessary for regulating gene expressio

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter7: Gene Expression And Control

Section: Chapter Questions

Problem 15SQ

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Given the following mRNA, write the double-stranded DNA segment that served as the template. Indicate both the 5 and the 3 ends of both DNA strands. Also write out the tRNA anticodons and the amino acid sequence of the protein encoded by the mRNA message. DNA: mRNA: 5-CCGCAUGUUCAGUGGGCGUAAACACUGA-3 protein: tRNA:
Select the processes that only happen inside the nucleus of a eukaryotic cell. Select all that apply. O making tRNA O transcribing rRNA O removing introns from precursor mRNA O transcriptional initiation at the promoter O adding the polyA tail O mRNA binding to the small ribosomal subunit ORNA splicing O tRNA binding to codons
The diagram shows a pre-mRNA before splicing and processing. In this cell type, a protein is present that binds to the 3' splice site of intron 2, such that the spliceosome cannot bind here. What components of this transcript will be retained (and ultimately translated) vs. removed (not translated) in the spliced mRNA? RNA Exon 1 Intron 1 Exon 2 Intron 2 Exon 3 Intron 3 Exon 4 Exon 1 Intron 1 Exon 2 Intron 2 Exon 3 Intron 3 Exon 4 Removed Retained > <
Shown below is an eukaryotic gene. Assuming normal wild type RNA processing in a.cell, which of the following mature MRNAS could result in normal levels of functional synthesized proteins? Select all that apply Direction of transcription Promoter Template strand 5' Exon 4 Intron 3 Exon 3 Intron 2 Exon 2 Intron 1 Exon 1 3' 5' Coding strand Transcription start Transcription start 5' CAP-Exon1-Exon3-Exon4-AA..AAAA 5' CAP-Exon1-Exon2-Exon3-Exon4-AA...AAAA 5' CAP-Exon1-Exon2-Exon3-Exon4 Exon1-Exon2-Exon3-Exon4-.....AAAA
RNA polymerase O Transcription to produce pre-mRNA O Post- transcriptional modification Nuclear pore complex OExport of mature mRNA into cytoplasm OPost- Ribosome with transfer RNAS translational O Translation of OProtein folding modifications. mature mRNA Look at the image above: 3. Where does transcription specifically take place in the cell? 4. Where does translation specifically take place in the cell?
Prokaryotic cells can have more than one functional start codon per mRNA because There are multiple answers A prokaryotic promotes consist of two separated sequences: the -30 box and the -10 box B they make polycistronic RNA C both transcription and translation happen in the same cellular compartment D prokaryotic ribosomes bind to the Shine-Delgarno sequence E the activity of the lac repressor is regulated based on the physiologic condition of the cell
Modifications of histone tails can: O repress the transcription of some genes affect chromatin structure affect the transcription of some genes in response to the diet or environment activate the transcription of some genes all of these choices are correct The ferritin gene encodes an IRE (Iron-response element) within the 5 UTR (untranslated region) of the MRNA Considering what you know about eukaryotic translation, the IRE-BP (Iron Response Element Binding Protein) is bound to the IRE in the 5'UTR. you would expect: O That the presence of the IRE-BP would enhance translation. That the presence of the IRE-BP would have no effect. That the presence of the IRE-BP would block translation I don't remember enough about the IRE-BP or transiation to guess. 3 Assuming that the trait represented by the filled symbols in the pedigree is an inherited trait due to a single gene with alleles A and a, what mode of inheritance does the pedigree shown suggest?
Consider gene expression in a eukaryotic cell. Which of the following is true for transcription in this cell? Select all that apply. MRNA has to be processed before leaving the nucleus MRNA can be synthesized by Transcription and at the same time this mRNA can be used for protein synthesis or Translation RNA polymerase requires several transcription factors for efficient transcription initiation During Transcription, the enzyme topoisomerase relaxes negative supercoiling in the DNA strands
What would happen to an mRNA produced from a gene that contained a mutation in the 3'UTR region that deleted a cis-element required for poly A tailing?Question 20 options: The mRNA would be exported to the cytoplasm but would not be translated very efficiently The mRNA would never be exported to the cytoplasm The mRNA would not be spliced or exported to the cytoplasm The mRNA would be translated into a mutant protein
Consider gene expression in a prokaryotic or bacterial cell. Which of the following is true for transcription in this cell? Select all that apply. During Transcription, the enzyme topoisomerase relaxes negative supercoiling in the DNA strands MRNA can be synthesized by Transcription and at the same time this mRNA can be used for protein synthesis or Translation MRNA has to be processed before leaving the nucleus RNA polymerase requires sigma factor for efficient transcription initiation
Choose all that apply regarding gene transcription in eukaryotes: Exons are removed from mRNA by the spliceosome. RNA polymerase II must completely finish an mRNA transcript before processing can begin. RNA polymerase I catalyzes the synthesis of the majority of ribosomal RNA. Histone acetylation is a method of controlling gene expression. Acetylation creates more positive charges on histones, leading to tighter binding of the proteins to DNA. Introns must be removed from the initial RNA transcript. The hormone 17beta-estradiol binds to a G-protein coupled receptor to control gene transcription. The 5' cap of mRNA requires the free triphosphate on the nucleotide at the 5' end. Multiple transcription factors are necessary to form the pre-initiation complex (PIC) of RNA Pol II.
Which of the following is true of the timing of RNA processing? The premise is false; mRNA processing does not occur in eukaryotes mRNA processing occurs in the cytosol after pre-mRNA is exported from the nucleus mRNA processing occurs co-transcriptionally mRNA processing occurs in the nucleus after transcription has terminated