If you add a co-eepressor to a repressor protein and that allows it to bind the operator is this a inducible, constitutive or repressible operon?
Q: How does catabolite repression work on gal operon?How could you decide if one particular operon is…
A: catabolite repression : Catabolite repression is a regulatory system by which any microorganism…
Q: Define an operon.give an example,exaplain an inducible operon?
A: Gene regulation is the mechanism which acts to either induce or repress the gene expression. It…
Q: Explain, with diagrams, how transcriptionattenuation works in the trp operon.
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Q: The process in which the two-dimensional structure of RNA from the L region of an operon can either…
A: The strategy of creating an RNA duplicate of a grouping is transcription. The transcript, known as…
Q: A mutation at the operator prevents the regulator protein from binding. What effect will this…
A: An operon includes a group of genes that have a common promoter, regulator, and would be transcribes…
Q: Describe briefly the Trp operon? Why is it considered an example of negative regulation?
A: An operon is a cluster of genes that are transcribed together to give a single messenger RNA (mRNA)…
Q: What do you mean by coordinate expression of genes in operon?
A: Answer- In prokaryotes genes are controlled by one promoter region that is called polycistronic…
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A: A mutation is a change in the genetic material (the genome) of a cell of a live creature or a virus…
Q: A new operon called Terperon is discovered and is not normally transcribed. It is stimulated by the…
A: Operon is the cluster of regulatory, promoter, operator and structural genes
Q: According to the operon model, for the synthesis of an inducible enzyme to occur, the end-product…
A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…
Q: In the lac operon, how would gene expression be affected if each one of the following segments was…
A: The lac operon is basically a group of genes with a single promoter whose genes encode proteins that…
Q: Describe the difference between a repressible and an inducible operon.
A: The theory of Operon comes from the concept of "gene-regulation" proposed by Jacob and Monod. It is…
Q: What is an operon? Explain an inducible operon.
A: In genetics, an operon is a functioning unit of DNA containing a cluster of genes under the control…
Q: What type of mutation in an operon is most likely to affect the synthesis of more than one protein?
A: Mutation is the process, in which genetic sequence is changed, which results in the change in…
Q: If an operon is controlled by an activator and the substrate of the metabolic pathway then the type…
A: An operon can be defined as that functional unit of DNA containing many genes, all of which are…
Q: A mutation prevents the catabolite activator protein (CAP) from binding to the promoter in the lac…
A: Mutation means sudden changes occur in DNA sequences. The mutation occurs randomly. It also occurs…
Q: How do we know that the trp operon is a repressible controlsystem, in contrast to the lac operon,…
A: Introduction The process by which the information contained in a gene is used to drive the assembly…
Q: Expression of the operon ultimately results in the synthesis of the repressor (Q) and co-repressor…
A: A repressor is a protein that turns off the expression of one or more genes. The repressor protein…
Q: How does exposing an E. coli cell to glucose affect the regulation of the lac operon via CAP? a.…
A: Catabolite activator protein (CAP) impacts the expression of the lac operon based on the catabolites…
Q: The regulation of the lac operon in E. coli by Catabolite Activator Protein and glucose is an…
A: An operon is essentially a gene regulatory system in which a collection of genes coding for…
Q: In a bacterial operon, the active repressor bind to the A. promoter. B. terminator. C.…
A: The operon concept can be defined as a DNA containing a set of genes that are transcribed basically…
Q: In the lac operon, regulation of gene expression by CAP-CAMP is a type of O a. positive repressible…
A: Lac operon can be defined as the set of constitutive genes with a single promoter that encodes for…
Q: Suppose that an operon that exhibited positive control was inducible. Would the regulator gene in…
A: An operon is defined as a group of genes that have a common promoter and regulator and also…
Q: A mutation at the operator prevents the regulator protein from bindingWhat effect will this mutation…
A: A group of genes that are transcribed under a single promoter and an operator is referred to as…
Q: What is an operon? Describe the functions of regulators, promoters,and operators.
A: The structure responsible for the regulation of genes in order to synthesize the associated proteins…
Q: Consider the following scenario: A bacteria cell is surrounded by lactose, but there is no glucose…
A: Lac operon is an operon model takes place in E coli bacteria . It consists of :- A)Promoter B )…
Q: Can you think for how long the lack operon would be expreesed in the presence of lactose?
A: Lac operon is an operon that regulates the breakdown of lactose present in the medium. It contains…
Q: In how many different ways is the regulation of the Trp operon?
A: An Operon is a region in a DNA that is required for the regulation of gene expression in…
Q: For the following types of transcriptional control, indicate whether the protein produced by the…
A: Operon is a functional unit of DNA that consists of cluster of genes under control of promoter. Gene…
Q: Would you expect to see attenuation in the lac operon and other operons that control the metabolism…
A: Lac operon contains genes that are involved in the lactose metabolism. It is expressed when lactose…
Q: DEFINE what is an Operon, and compare and contrast regulation of the LAC Operon and the TRP Operon.…
A: As per our honor code, we are allowed to answer one question at a moment. You have posted multiple…
Q: Under which of the following conditions will transcription of the lac operon occur?a) Lactose…
A: Introduction All the gene expressions are under high regulation and this is necessary to avoid…
Q: Positive repressible means the regulatory protein is a(n) ______, and the operon is ______ when the…
A: In the case of the positive repressible operon, the activator protein is found to be bound and…
Q: You have E. coli growing in HIGH lactose and HIGH glucose. You measure the amounts of protein and…
A: The E.coli is growing in a medium rich in lactose and Glucose both. There are two regulatory…
Q: Theara operon is an inducible operon that controls the production of the sugar arabinose. When…
A: An operon is a group of genes that are transcribed together and are under the influence of a single…
Q: A mutation occurs in the 5′ UTR of the trp operon that reduces the ability of region 2 to pair with…
A: In the absence of tryptophan, the trp operon would be expressed maximum as the trp repressor would…
Q: In regulations demonstrated by initiation of transcription, if lactose is abundant, lactose in this…
A: The promoter is a region on the lac operon which is bounded by RNA polymerase to initiates the…
Q: A mutant strain of E. coli produces β-galactosidase in both the presence and the absence of lactose.…
A: A set of genes present in E.coli. that regulates the uptake of lactose from the surrounding…
Q: For each of the following types of transcriptional control, indicate whether the protein produced by…
A: An inducible operon is one which is not transcribed. For transcription of the molecule, It requires…
Q: A mutation at the operator prevents the regulator protein from binding.What effect will this…
A: An operon is defined as a group of genes that have a common promoter and regulator and also…
Q: In the lac operon, the lacZ gene codes for an enzyme called ____________, which catalyze the…
A: 1st blank: beta-galactosidase 2nd blank: Lactose
Q: Which reaction normally happens in the regulation of the trp operon when high levels of tryptophan…
A: The trp repressor controls the trp operon. When coupled to tryptophan, the trp repressor prevents…
Q: The blob operon produces enzymes that convert compound A into compound B. The operon is controlled…
A: Operon is a term used for the functional unit of the DNA that contains the cluster of genes which…
Q: What does the lac operon consist of? How is the operator switch turned on and off in the expression…
A: Lac operon is the operon or machinery for the transport and metabolism of lactose in Escherichia…
Q: In the tryptophan operon, tryptophan is considered a Group of answer choices coactivator inducer an…
A: Step 1 Jacob and Monad (1961) from their study in bacterial genetics proposed that genetic material…
Q: A mutation at the operator prevents the regulator protein from binding.What effect will this…
A: Inducible operon has proteins that bind to repress or activate transcription. It depends on the…
Gene Interactions
When the expression of a single trait is influenced by two or more different non-allelic genes, it is termed as genetic interaction. According to Mendel's law of inheritance, each gene functions in its own way and does not depend on the function of another gene, i.e., a single gene controls each of seven characteristics considered, but the complex contribution of many different genes determine many traits of an organism.
Gene Expression
Gene expression is a process by which the instructions present in deoxyribonucleic acid (DNA) are converted into useful molecules such as proteins, and functional messenger ribonucleic (mRNA) molecules in the case of non-protein-coding genes.
If you add a co-eepressor to a repressor protein and that allows it to bind the operator is this a inducible, constitutive or repressible operon?
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- In the tryptophan operon of E. coli, what happens when tryptophan levels get too high? tryptophan is removed from its co-repressor, causing it to detach from the operator tryptophan is removed from its co-repressor, causing it to attach to the operator tryptophan is bound to its co-repressor, causing it to detach from the operator tryptophan is bound to its co-repressor, causing it to attach to the operator all of the above occur at equal rates when tryptophan levels get too high (Option C is the answer for the question above) What effect will the above process have on the tryptophan operon? RNA polymerase will detach from the promoter, initiating transcription RNA polymerase will detach from the promoter, stopping transcription RNA polymerase will attach to the promoter, initiating transcription RNA polymerase will attach to the promoter, stopping transcription all of the above occur at equal rates when tryptophan levels get too highIn the tryptophan operon of E. coli, what happens when tryptophan levels get too high? tryptophan is removed from its co-repressor, causing it to detach from the operator tryptophan is removed from its co-repressor, causing it to attach to the operator tryptophan is bound to its co-repressor, causing it to detach from the operator tryptophan is bound to its co-repressor, causing it to attach to the operator all of the above occur at equal rates when tryptophan levels get too high (Option D is the answer for the question above) What effect will the above process have on the tryptophan operon? RNA polymerase will detach from the promoter, initiating transcription RNA polymerase will detach from the promoter, stopping transcription RNA polymerase will attach to the promoter, initiating transcription RNA polymerase will attach to the promoter, stopping transcription all of the above occur at equal rates when tryptophan levels get too highIn the tryptophan operon of E. coli, what happens when tryptophan levels get too high? tryptophan is removed from its co-repressor, causing it to detach from the operator tryptophan is removed from its co-repressor, causing it to attach to the operator tryptophan is bound to its co-repressor, causing it to detach from the operator tryptophan is bound to its co-repressor, causing it to attach to the operator all of the above occur at equal rates when tryptophan levels get too high What effect will the above process have on the tryptophan operon? RNA polymerase will detach from the promoter, initiating transcription RNA polymerase will detach from the promoter, stopping transcription RNA polymerase will attach to the promoter, initiating transcription RNA polymerase will attach to the promoter, stopping transcription all of the above occur at equal rates when tryptophan levels get too high
- For the following types of transcriptional control, indicate whether the protein produced by the regulator gene will be synthesized initially as an active repressor or as an inactive repressor. Q. Negative control in a repressible operonGiven the Table below concerning the lac operon, match the letter with what would be occurring for each scenario. Repressor is bound to the operator, cAMP complex is bound and transcription is prevented. Allolactose is bound to the repressor, cAMP complex is bound, and transcription is prevalent. Allolactose is bound to the repressor, cAMP complex is not assembled, and transcription is slow Repressor is bound to the operator, cAMP complex is not assembled, and transcription is prevented.You have isolated different mutants (reg1 and reg2) causing constitutive expression of the emu operon (which has genes emu1 and emu2). One mutant contains a defect in a DNA-binding site, and the other has a loss-of-function defect in the gene encoding a protein that binds to the site Say you don’t know which mutant has a defect in the site and which one has a mutation in the binding protein. To figure it out, you construct the two partial diploid strains (i and ii below), and you then assay the levels of the Emu1 and Emu2 proteins in these two strains. F’ (reg1- reg2+ emu1- emu2+) / reg1+ reg2+ emu1+ emu2- F’ (reg1+ reg2- emu1- emu2+) / reg1+ reg2+ emu1+ emu2- What proteins do you predict will be expressed for strains i and ii if reg2 encodes the regulatory protein and reg1 is the regulatory site?
- You can determine the regulation of an unknown operon based on descriptions like those in the table below. For each row, choose whether the fact would suggest positive or negative or inducible or repressible regulation and indicate your answer with an X in the column. Only one X should appear in each row. In the presence of the signal, the structural genes are expressed. In the presence of the signal, the structural genes are not expressed. In the absence of the signal, the structural genes are expressed. In the absence of the signal, the structural genes are not expressed. The binding of the regulatory protein to the operon results in structural gene expression. The binding of the regulatory protein to the operon prevents structural gene expression. A mutation in the regulatory protein results in constitutive expression of the structural genes. A mutation in the regulatory protein results in no or low expression of the structural genes. Positive? Negative? Inducible? Repressible?The lac operon of E. coli controls the expression of genes that code for enzymes involved in lactose metabolism. Mutations to various regions of the lac operon have been discovered which affect both the control of gene expression and the function of the gene products. These mutations include: I - = produces a repressor protein that cannot bind to the operator region IS = produces a repressor protein that cannot be removed from the operator region OC = cannot bind a repressor protein Z - = produces a defective (non-functioning) β-galactosidase enzyme + = wild type Detail the functionality of the lac operon under the following genetic and cellular conditions. You do not need to consider the role of CAP in your analysis. Genes Repressed (yes/no) Constitutive (yes/no) I+ OC Z+ I+ O+ Z+ (Lactose present) I- O+ Z+The lac operon of E. coli controls the expression of genes that code for enzymes involved in lactose metabolism. Mutations to various regions of the lac operon have been discovered which affect both the control of gene expression and the function of the gene products. These mutations include: I - = produces a repressor protein that cannot bind to the operator region IS = produces a repressor protein that cannot be removed from the operator region OC = cannot bind a repressor protein Z - = produces a defective (non-functioning) β-galactosidase enzyme + = wild type Detail the functionality of the lac operon under the following genetic and cellular conditions. You do not need to consider the role of CAP in your analysis. Genes Repressed (yes/no) Constitutive (yes/no) IS O+ Z+ IS OC Z+
- In the absence of lactose and the lacI repressor gene is mutated such that the repressor protein product can no longer bind to the operator, the structural genes will: [ Select ] ["No longer be expressed", "Be constantly expressed", "Be deleted from the operon"] In the presence of lactose and the lacI repressor gene is mutated such that the repressor protein product can no longer bind to the operator, the structural genes will: [ Select ] ["No longer be expressed", "Be constantly expressed", "Be deleted from the operon"]. In the tryptophan operon of E. coli, what happens when tryptophan levels get too high? tryptophan is removed from its co-repressor, causing it to detach from the operator tryptophan is removed from its co-repressor, causing it to attach to the operator tryptophan is bound to its co-repressor, causing it to detach from the operator tryptophan is bound to its co-repressor, causing it to attach to the operator all of the above occur at equal rates when tryptophan levels get too highFor the following types of transcriptional control, indicate whether the protein produced by the regulator gene will be synthesized initially as an active repressor or as an inactive repressor. Q. Negative control in an inducible operon