Which of the following is not a control of gene transcription?The repression of a gene by the binding of a transcription factor to a silencer regionMethylation of promotor sequencesThe stabilization of the initiation complex by transcription factors to allow RNA polymerase to begin replicationThe conversion of heterochromatin to euchromatin through histone demethylationThe binding of an inhibitory protein to the 3' UTR

Transcription is the process of the rewriting genetic message coded in DNA on to RNA. It occurs…

Answered: Which of the following is not a control…

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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Transcription factors function in the nucleus. However, like (almost) all eukaryotic proteins,they are translated in the cytosol. Can you draw a visual to explain how transcription factor proteinsenter the nucleus from the cytoplasm? Can you also include a representation of relevant proteins and proteindomains to explain how these proteins reach their destination. Thank you
What is the production of RNA called and what is the enzyme that catalyzes the process?What are the similarities and differences between the transcription process and the repli-cation processes?Concerning their biological function what is the difference between DNA and RNA? Is there any situation in which DNA is made based on a RNA template? If there is,explain with an example how it occurs and state the enzyme involved?What is the difference between plasma membrane and cell wall?
Which of the following characterize RNA polymerase Il transcriptional termination in eukaryotes? Endonuclease cleavage of the RNA transcript and 5' to 3' exonuclease activity a protein known as Ratl None of the provided answers, transcriptional termination occurs in prokaryotes. Recognition of the transcriptional stop codon by a release factor. Hairpin structure formation on the newly synthesized RNA molecule which disrupts the DNA-RNA hybrid at a poly-U RNA sequence Binding of the Rho protein.
Hydrogen bonds are important in DNA replication and transcription. They are relatively weak chemical bonds. Why is this a desirable feature for DNA? Describe the effect (s) of changing (mutating) the promoter on the transcription of the DNA strand/gene the promoter controls. What happens to protein synthesis if a nonsense codon is inserted into the gene? Explain why a point mutation does not necessarily change the original amino acid sequence. (Explain silent mutations) Choose any pentapeptide composed of five different amino acids. List the amino acids. Present one messenger RNA codon for each amino acids and the sequence of nucleotides on the DNA that originally coded for your pentapeptide.
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?
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
Where does transcription take place? nucleus cytoplasm ribosome mitochondria Why must transcription occur where DNA can be found? because DNA can't leave because ribosomes are in the nucleus because DNA polymerase is found there because helicase unzips the DNA How many nucleotides equal 1 amino acid? 1 3 TRANSCRIBE this DNA sequence: TACGTTACT AUGCAAUGA ATGCAATGA AUGGATUGA TACGTTACT É O O O O O O O O
Arrange the processes involved from Transcription to Translation. RNA polymerase binds in the promoter regions Polypeptide cleavage Release of methionine and conversion to active protein Translocation Appearance of UAG codon Attachment of the mRNA to ribosome with AUG in the P site DNA rejoins Covalent bonding of AA to the tRNA Elongation of RNA transcript Binding of Rho factor Partial unwinding of DNA
Which of the following is least related to the other items? Group of answer choices inducer repressor operator enhancers 2. A scientist observing a cell during gene expression would be able to easily distinguish it as a prokaryotic cell by which of the following observations? Group of answer choices as soon as the DNA introns are removed from the template after the 5' caps are converted to mRNA after a transcription initiation complex has been formed during transcription once the pre-mRNA has been converted to mRNA
Lack of phosporylation of the C-terminal domian of Pol Il will result in which of the following? O Assembly of the full set of general transcription factors plus Pol II at the promoter, but unphosphorylated Pol II cannot leave the promoter region No assembly of the general transcription factors at a promoter No binding of Pol II at a promoter The unphosphorylated Pol II can initiate and elongate but cannot terminate
Which of the following DNA regulatory protein “motifs” consists of three a-helices, in a single polypeptide, acting independently of other polypeptides in the regulation of DNA? the leucine zipper the zinc finger the homeodomain all of the above none of the above Which of the following processes regulates the maturation of mRNA from hnRNA (in the control of gene expression in humans and other eukaryotes)? translation of polypeptides self-replication of DNA processing of RNA transcription of RNA self-replication of RNA
Initiation of prokaryotic transcription is primarily regulated by: Question 1 options: Core enzyme of RNA Polymerase Chromatin structure Activators Repressors Sigma factors

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