Post-transcriptional control of gene regulation: None of the above Can stop gene expression quickly Occurs after mRNA is transcribed All of the above
Q: At which level of gene regulation shown in Figure 16.1 does attenuation occur?
A: Attenuation is a process which involves a presence of a stop signal which suggests premature…
Q: Which of the following best describes post-translational protein regulation? Regulation of the…
A: Translation is the cellular processes by which polypeptide chain is synthesized according to the…
Q: Which of the following gene mutations is most likely tohave the most severe impact on gene…
A: Eukaryotic genome is usually larger than prokaryotic genome. This is because of the presence of…
Q: Which of the following mechanisms may create multiple mRNAsfrom the same gene?a. posttranslational…
A: Introduction A genome is consisting of transcriptionally active genes. These genes form mRNA as…
Q: Which of the following characteristics of gene expression is shared by eukaryotic and prokaryotic…
A: Ribosomes are attached to the nuclear membrane when producing secreted proteins. Transcription is…
Q: Signal molecules from embryonic cells cause transcriptional changes in nearby target cells in the…
A: Cell signaling(cell communication) is defined as the process the cells use chemical signals to…
Q: Gene expression is Usually regualated at the initiation of transcription. True False
A: In particular, gene expression is controlled on two levels. To begin with, transcription is…
Q: Describe the effects of changing the promoter on the transcription of the DNA strand/gene the…
A: The promoter is the DNA (deoxyribonucleic acid) element that binds to the RNA (ribonucleic acid)…
Q: Cytosines are methylated most frequently in CG regions in the DNA. Pre-transcriptional control…
A: * In Pretranscriptional Control DNA methylation and chromatin packing are used. *Example Barr body…
Q: The addition or deletion of methyl and acetyl groups to regulate transcription Proteins that…
A: Answer. Transcription is a process of formation of transcript (RNA). It takes place by the usual…
Q: In eukaryotic cells, alternative splicing of the pre-mRNA (primary transcript) to form different…
A: The correct option is B i e, post- transcriptional modification. Explanation:.…
Q: Signal molecules from embryonic cells cause transcriptional changes in nearby target cells in the…
A: Cell signaling (cell communication) is described as the process by which cells communicate with each…
Q: Which gene regulation event is ONLY present in prokaryotes? a. transcription level of regulation…
A:
Q: Discuss the advantages and disadvantages of genetic regulation at the different points identified.
A: Genes are basic physical and functional unit of heredity. It is a part of DNA that has instruction…
Q: Which statement is TRUE of the CRM (cis-regulatory module)? a) it codes for transcription factors…
A: The cis regulatory elements control gene expression at various developmental stages.
Q: A down promoter mutation causes the promoter of a gene to be_______ like the consensus sequence and…
A: For gene expression, the promoter is the most essential element, since it is the DNA…
Q: What level of control of gene expression is defined as regulating whether a particular mRNA is…
A: Dna undergo transcription and form the m-rna and this is translated to form the protein.the…
Q: Gene expression regulation by methylation of the cytosines in a promoter would be considered
A: Answer - Option B - Transcriptional regulation
Q: Discuss gene expression from transcription to translation.
A:
Q: Transcription of genes starts at regions of the genome called
A: Transcription begins when an RNA polymerase binds to a so-called promoter sequence on the DNA…
Q: Which level of gene expression regulation is used in eukaryotes, but not bacteria? transcription…
A: Regulation refers to the controlling of the gene expression.
Q: In gene expression, a gene is _________ (translated, transcribed) into mRNA, which is then _________…
A: Expression of gene is the cycle by which the directions in our Deoxyribose Nucleic Acid (DNA) are…
Q: Sometimes a transcription factor within the cytoplasm can act as an intracellular receptor for a…
A: Transcription factors are the proteins that help in recognizing the promoter region of a gene and…
Q: When a protein needs to be made, a signal is sent to a cell to turn on the ____ that codes for the…
A: Transcription and translation are the two processes that are involved in the central dogma of life.…
Q: ct one: a The gene is turned off, but still expresses a protein product. . The gene becomes…
A: DNA methylation is associated with the silencing of gene expression.
Q: tight packing of previously less condensed chromatin identify which describes the statement…
A: Post translational modifications in histone proteins can change the shape of chromatin, which can…
Q: Which of the following is NOT a regulatory DNA sequence? Origin Promoter Repressor
A: A regulatory sequence is defined as a DNA sequence capable enough to affect the expression of…
Q: When regulatory protein binds to a mature mRNA in the cytoplasm and prevents it from binding to a…
A: Translational regulation is the mechanism that aims to control the levels of protein synthesis from…
Q: Insulator regions make sure that A. genes are protected from transposon insertions B. genes are…
A: Gene is the basic unit of inheritance in the DNA of organisms. They have a specific role in an…
Q: How can small interfering RNAS (SİRNAS) and micro RNAS (MİRNAS) regulate gene expression? Prevent…
A: A gene is a functioning heredity unit made up of DNA that provides instructions for the creation of…
Q: CHANGE OF THE PROCESSES THAT CHANGE GENETIC INFORMATION INTO ITS NEW FORM
A: Genetics is one of the diverse and widely studied branch in the field of science. It is a branch of…
Q: Which level of gene regulation is involved when alternative sigma factors change the recognition of…
A: Alternative sigma factor in association with core RNA polymerase provide a mechanism of cellular…
Q: DNA and RNA are information molecules with different roles in gene expression. List three…
A: DNA means deoxyribo nucleic acid.It is a molecule made up of two polynucleotide chains that are…
Q: karyotic regulation of gene expression occurs at the level of _____ transcription splicing and…
A: Given: Need to explain the Eukaryotic regulation of gene expressions
Q: A The impact of temperature on gene expression enzymatic differences at different temperatures The…
A: RNA-Seq is a sequencing technique that employs next-generation sequencing to reveal the presence and…
Q: Which level of control of genes expression is defined as determining if a particular gene can give…
A: The information carried in the genes is expressed via a process known as central dogma of molecular…
Q: Which of the following is not true of RNA processing?(A) Exons are cut out before mRNA leaves the…
A: RNA processing is the process of collective events by which a pre-mRNA transcript formed from a gene…
Q: A regulatory region shows all of the following properties except
A: Ans - a) can be located in an exon. Regulatory regions cannot be present at the exon portion of a…
Q: Transcription and translation are separate processes in gene expression; however, they have…
A: Central dogma is a process where particular segment of DNA or gene ultimate express as a protein or…
Q: Arrange the numbers to show the correct order of events in transcription and translation. In the…
A: In the nucleus of a cell, DNA becomes active by rearrangement of epigenetic factors making genes…
Q: Which of the following are common ways to regulate a protein? Group of answer options none of the…
A: Regulation of pathways The regulation of the metabolic pathway depends upon supply of nutrients,…
Q: Differential lengths of poly-A tails affect mRNA stability. Pre-transcriptional control…
A: According to bartleby guidelines only first question is to be answered. So upload other questions…
Q: Which of the following cis regulatory elements are present in the pre-MRNA sequence? SRs hnRNPs ESES…
A: RNA editing and splicing are the two major techniques that dynamically regulate human transcriptome…
Q: Which level of gene regulation is involved for some genes with higher gene copy number? O genome…
A: ANSWER;-Transcriptional Explain;- Gene regulation alludes to the instruments that act to induce or…
Q: Gene expression can be affected by all of these EXCEPT: - Considering chromosomes -Adding mote…
A: Gene expression is the process by which information from a gene is used in the synthesis of a…
Q: The promoter region of a gene consists of a TATA box. What is the significance of this region? It is…
A: The gene expression is also known as the transcription process by which RNA is produced from DNA…
Q: Which of the following is not a general description of the gene expression regulation mechanisms…
A: INTRODUCTION Gene regulation is the process of controlling which genes in a cell's DNA are expressed…
Q: The selection of a specific promoter to activate during mRNA synthesis is determined by:
A: The selection of specific promoter is achieved by the set of specific transcription factors in the…
Q: Which of the following are regulatory elements (regions of DNA that are not transcribed or…
A: DNA or deoxyribose nucleic acid is the molecule which contains all the genetic information of an…
Step by step
Solved in 2 steps
- question 26 What is true for CpG Islands: stretches of a few hundred base pairs of DNA where cytosines are unmethylated are not associated with genes are not found around the promoters are associated with silenced genesQUESTION 23 Which of the following is not part of pre-mRNA processing in eukaryotes? Addition of a 5’ cap Excision of introns Addition of a 3’ poly-A tail Excision of the promoterQUESTION 12 The leucine zipper domain of transcription factors is not involved in DNA recognition but rather in facilitating dimerization. Given the chemical properties of the amino acid leucine, dimerization of transcription factors via this domain by (select the correct option). Facilitating hydrogen bonding with the aqueous environment. Chelation of bivalent ions such as Zn2+. Formation of coiled-coils through hydrophobic non-covalent interactions between evenly spaced Leu residues in alpha-helical domains. Physically connecting the two transcription factor subunits through unstructured loops.
- QUESTION 20 Which of the following is not true with respect to eukaryotic genes? They contain introns which do not code for protein They can exist as operons, with multiple genes under the control of a single promoter They require transcription factors for initiation of transcription Termination sites for transcription are not well definedQUESTION 13 Where does transcription occur in eukaryotic cells? in the nucleus in the cytoplasm at the golgi apparatus at the plasma membraneQuestion 26 What is true for CpG Islands: Question 26 options: stretches of a few hundred base pairs of DNA where cytosines are unmethylated are not associated with genes are not found around the promoters are associated with silenced genes
- Question 15 Activities found in the rough ER and its functions include the folllowing EXCEPT provides a membrane binding site for the RNA with signal a signal sequence facilitates post-translational modifications allows the entry of polypeptides that will undergo glycosylation provides a membrane scaffold for binding of ribosomes for protein synthesisQUESTION NO. 1 During initiation of protein synthesis, A. methionyl-tRNA appears at the A site of the 80S initiation complex. B. eIF3 and the 40S ribosomal subunit participate in forming a preinitiation complex . C. eIF2 is phosphorylated by GTP . D. the same methionyl-tRNA is used as is used during elongation . E. a complex of mRNA, 60S ribosomal subunit, and certain initiation factors is formed. QUESTION NO. 2 Normally, certain kinds of reiterated sequences occur in a chromosome as an interspersion pattern that is A. highly repetitive DNA sequences. B. the portion of DNA composed of single-copy DNA. C. Alu sequences. D. alcernacing blocks of single-copy DNA and moderately repetitive DNA. E. alternating blocks of short interspersed repeats and long interspersed repeats.Question 9 Both conservative and replicative transposition result in movement of the transposon; however, only conservative transcription Group of answer choices A. Transfers the transposition to the new location without copying it B. Has transposase that cuts at inverted repeats and target sequences C. Produces a second copy of the transposon sequence D. Inserts the transposon sequence into target sequences
- Question 1. Suppose that the diagram below represents the genomic organization of an enzyme involved in eye pigment production in mice. Within the gene are four exons. Biochemical analysis has revealed that the active site of the enzyme is located in the C terminus of the protein. The nucleotide length of each exon and intron is shown. The dinucleotide sequence GT represents the 5’ splice site and the dinucleotide sequence AG represents the 3’ splice site. Both the 5’ and the 3’ splice sites must be present for splicing to occur. Assume that the first and second stop codons are located immediately after the first and second 5’ splice sites, respectively; the third and fourth stop codons are located near the 3’ end of exons 3 and 4, respectively; all these stop codons are in the correct reading frame. E) Suppose you isolate a mutant mouse that has white eyes. When you examine the size of the eye pigment enzyme produced by this mouse, you see that it is 400 amino acids long. Sequence…QUESTION 22 Which type of mutation results in no change in amino acid sequence for the protein? Silent Missense Nonsense FrameshiftQuestion 5. AP1 is a transcription factor and an important regulator of gene expression and cell proliferation. Dysregulation of AP1 function may lead to cancer. The fos gene codes for AP1. Below is an experiment in which the role of a micro‐RNA (miR‐7b) in the regulation of fos gene expression was studied. miR‐7b shows partial sequence complementarity to the 3′‐untranslated region of fos mRNA. A DNA fragment coding for miR‐7b RNA and another fragment coding for a micro‐RNA unrelated to fos mRNA were cloned into vectors, and the recombinant plasmids (designated si‐miR‐7b, samples 3 and 4, and si‐miR‐neg, samples 5 and 6, respectively, in Fig. 1) were introduced into mouse fibroblast cells. Non-transfected cells were used as controls (samples 1 and 2). Samples 2, 4, and 6, were treated with a chemical PMA that induces transcription of fos gene; samples 1, 3, and 5 were left untreated. Two hours after PMA treatment protein extracts were prepared from the cultures and were then…