Q: What role does the I gene product play in regulation of the Lac operon
A: The operon plays an important role in bacteria. The lac operon is an essential operon useful for…
Q: components of an operon into the appropriate order
A: components of an operon into the appropriate order:…
Q: Would a mutation that inactivated lac repressor and prevented it from binding to the lac operator…
A: The negative regulation of the lac operon is done by a repressor, which is a product of the lacI…
Q: What turns the operon on when lactose is present?
A: An operon is defined as a functioning unit of DNA that contains a cluster or group of genes under…
Q: Compare and contrast the lac operon and trp operon of E. coli.
A: E.coli is a type of bacteria that is mostly found in the human intestine and gut of some animals. It…
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…
Q: What is the function of the Z gene of the Lac operon?
A: The lactose is cleaved into glucose and galactose by the enzyme β-galactosidase which is coded by…
Q: If the two trp codons in the leader sequence were mutated to stop codons, what effect would it have…
A: DNA is the preferred carrier of genetic information in most living organisms except for certain RA…
Q: Compare and contrast the functional mechanism of the Inducible - Lac operon with the Repressible -…
A: Gene expression is a process in which the genetic instructions of genes are utilized to manage…
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: Why trp operon has a higher level of expression than live operon in bacteria grown on nutrient-poor…
A: Operon is a genetic regulatory system that is found in bacteria and viruses. This system controls…
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: When lactose is first introduced into the medium, the lac operon is not induced and thus permease…
A: The lac operon in E.coli consists of 3 genes (lac Z, lac Y, lac A). The lac Z encodes beta…
Q: Which of the following arabinose operon regulatory sites is exclusively involved in the repression…
A: Hi, Thanks For Your Question. Answer : Correct Option Is Ara O2.
Q: The trp operon is a repressible operon system. What does this mean?
A: Trp refers to tryptophan. The operon is the functional unit of Deoxyribonucleic acid ( DNA) having…
Q: Why is the TRP operon considered a repressible operon, while the LAC operon is considered an…
A: Operons are areas of DNA which are composed of cluster of related genes which are controlled by…
Q: You grow bacteria in media where the only carbon source is lactose (rich lactose media). Which of…
A: Introduction- Lysogen is defined as the strain of bacteria affected by a virus, i.e., a phage that…
Q: A bacterial cell has very low glucose and lactose is present. Explain how the lac operon will…
A: Lac Operon -- An operon is a functioning unit of genomic DNA which contains a group of genes…
Q: Do you expect operons to occur extensively in Eukaryotes? Yes or no and explain.
A: Operons (clusters of co-regulated genes with related functions) are a well-known feature of…
Q: If glucose is absent, but lactose is available, the lac operon will be _____
A: “Operons” are systems of “gene regulation” of various bacteria and viruses. They control the…
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: The following is a sequence of the leader region ofthe his operon mRNA in Salmonella…
A: An operon is the functional unit of a gene. An operon also includes a setoff genes, which are under…
Q: what is the lac operon ? what happens in terms of the lac operon when lactose is absent from the…
A: The working segment of DNA that codes for proteins is a gene. An operon is a group of genes that are…
Q: Why it is essential to the positive stimulation of transcription of the lac operon ?
A: Lac operon includes the genes that code for the enzymes involved in lactose catabolism.
Q: What is the order of ZYA on the lac operon?
A: Lac operon includes a set of genes having a single promoter, which enables the bacterium to secrete…
Q: Which of the following arabinose operon regulatory sites is exclusively involved in the repression…
A: Answer - Option B - ara O2
Q: What is a negative inducible operon?
A: Regulated genes can be switched on/off depending on cell's metabolic needs. Operon It is a group of…
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: appropriate to use inducible operons? When is it appropriate to use repressible operons?
A: An operon is a collection of genes with similar functions that is managed by a single shared…
Q: If you make a large deletion in the lac operon to remove the operator region, will the structural…
A: Lac operpon Is an operon or a group of genes with a single promoter that encode genes for the…
Q: when tryptophan is present, what would happen to trp operon regulation
A: Introduction:- The trp operon is a collection of genes identified in E. coli bacteria that code for…
Q: Figure 5 shows the lac operon structure in Escherichia Coli What will happen if substance S is…
A: Lac operon contains genes coding for proteins in charge of transporting lactose into the cytosol and…
Q: Which of the following diagrams best models the regulation of the trp operon when tryptophan is…
A: An operon is a polycistronic gene regulated by a common promoter and regulatory sequences. Operons…
Q: Why does the lac operon include more than one operator sequence?
A: Lactose operon (lac operon) is an operon required for the transport and metabolism of lactose in…
Q: Lac operon experiment,
A: In bacteria, the operon is the coordinated unit of genetic expression and is the functioning unit of…
Q: High levels of glucose in the environment result in low levels of transcription of the lac operon.…
A: The lactose operon (lac operon) is an operon needed for the transport and digestion of lactose in…
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: What is the difference between positive and negative control? What is the difference between…
A: The cluster of genes that are regulated by a shared operator is called an operon. The multiple genes…
Q: The lac operon is an inducible operon. What does this mean?
A: Operons are the groups of genes related to a single pathway and controlled by a single promoter.…
Q: The illustration below shows the lac operon used in E. coli. Explain what is happening in the bottom…
A: An operon is a set of genes that get transcribed into single mRNA using one promoter. These operons…
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: Why is it beneficial for the bacterium to regulate the lac operon with both a repressor protein and…
A: Lac operon permits the metabolism of lactose sugar in bacterial cells. It contains three genes that…
Q: What is operon? How does the lac operon work?
A: A specific sequence of nucleotides in DNA is called DNA. It is a hereditary unit which is…
Q: In the medium where E.coli was growing, lactose was added, which induced the lac operon. Then, w hy…
A: The lac operon is a set of genes that share a single promoter (transcribed as a single mRNA). The…
Q: How could you prove that the Tn5 insertion was in the lac operon?
A: Genetic engineering (GE) is the intentional change of an organism's genetic structure, which…
Q: The lac operon is an operon that is: Group of answer choices A turned off whenever tryptophan is…
A: Operon is a series of Genes. It is polycistronic and mostly present in bacteria.
Q: In the tryptophan operon, if the leader peptide is translated normally A region 2 will pair with…
A: Answer, In bacteria, an additional, mechanism termed transcriptional attenuation negatively…
Q: Why do scientists define the trp operon as repressible and the lac operon as inducible?
A: Operon is a combination of genes that are transcribed by the same promoter.
In E. coli, the trp operon is on by default, while the lac operon is off. Why do you think that this is the case?
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- A mutation that inactivates the repressor gene of the lac operon results in (a) the continuous transcription of the structural genes (b) no transcription of the structural genes (c) the binding of the repressor to the operator (d) no production of RNA polymerase (e) no difference in the rate of transcriptionWhy is the TRP operon considered a repressible operon, while the LAC operon is considered an inducible operon?If you make a large deletion in the lac operon to remove the operator region, will the structural proteins of the lac operon be made?
- Why do scientists define the trp operon as repressible and the lac operon as inducible?The lac operon produces enzymes that allow the bacteria E. coli to metabolize lactose, it is in an inducable operon. When lactose is present, will the repressor protein attach or leave the operon? How would this effect the production of lactose producing enzymes?Why does the lac operon include more than one operator sequence?
- A bacterial cell is mutated and cannot create the repressor protein associated with the Lac operon. How will this affect the functioning of the Lac operon?when tryptophan is present, what would happen to trp operon regulationWhat would happen if the operator sequence of the trp operon contained a mutation that prevented the repressor protein from binding to the operator? (Explain what would happen in both the presence and absence of tryptophan)
- If the two trp codons in the leader sequence were mutated to stop codons, what effect would it have on gene expression of that operon.What would happen if the operator sequence of the lac operon contained a mutation that prevented the repressor protein from binding the operator? (Explain what would happen both in the presence and absence of lactose)In most experiments using the lac operon, researchers use the synthetic inducer IPTG to turn on operon expression, instead of lactose or allolactose. What do you think is the advantage of using IPTG?