Which of the following arabinose operon regulatory sites is exclusively involved in the repression of the transcription of the ara operon? ara B ara O2 ara 01 ara PBAD the CAP binding site

Q: In E. coli, induction in the lac operon and repression in the trp operon are both examples of a.…

A: Transcription, translation, post-transcription and post-translation. The process in which the gene…

Q: What type of operon is arabinose operon? Dose the repressor bond when arabinose is I present or…

A: Introduction  An operon is a functional segment of Dna that houses a collection of genes that are…

Q: components of an operon into the appropriate order

A: components of an operon into the appropriate order:…

Q: Which of the following molecules is an inducer of the lac operon:a. Galactose d. Isothiocyanateb.…

A: The structural genes lac z, lac y, and lac in the lac operon code for beta-galactosidase (converts…

Q: The lac operon is an example of ________ control in which the presence of an ________ is required…

A: lac operon is present in E.coli and it produce the enzymes which are required for the lactose…

Q: In the lac and trp operons, the repressors are said to be “allosteric molecules” because…

A: Operons are basically the cluster of genes that can be transcribed together to give a messenger RNA…

Q: The lac operon consists of three structural genes, lacZ, lacY and lacA that are transcribed as a…

A: Lac operon has *3 structural genes- lacZ, lacY, lacA *promoter, *operator, *terminator, *regulator.

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: a mutation that leads to a nonfunctional adenylate cyclase enzyme would lead to what expression…

A: A mutation is a change in the genetic material (the genome) of a cell of a live creature or a virus…

Q: E. coli has five genes that code for enzymes that make tryptophan. These genes are regulated by a…

A: When a group of related genes exist under the control of a single promoter, it is referred to as an…

Q: In the presence of lactose and the presence of glucose the lac operon is not expressed Lacl is bound…

A: Introduction:- Lactose metabolism genes are found in the lac operon of E. coli. It is only expressed…

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: A number of mutations affect the expression of the lac operon in E. coli. The genotypes of several…

A: According to the question, we have to mention the strain which has the highest beta-galactosidase…

Q: Similar to the Lac operon, the Ara (arabinose) operon genes are most highly expressed when Both…

A: Similar to the Lac operon, the Ara (arabinose) operon genes are most highly expressed when Cyclic…

Q: The glycerol operon has two structural genes that encode the enzymes Amairmerasa and isomerase, as…

A: The usage of carbohydrates as an energy source is dependent on the availability of the concerned…

Q: Choose the best options, by dragging and dropping the colour coded text boxes below, that fill in…

A: Operon is transcription unit of prokaryotic genome with consist of many contiguous structural genes…

Q: Is the fox operon inducible or repressible?

A: Regulatory gene in the operon produces a protein which can act as either inhibitor or activator of…

Q: The lac operon consists of three structural genes, lacZ, lacY and lacA that are transcribed as a…

A:

Q: Which of the following arabinose operon regulatory sites is exclusively involved in the repression…

A: Answer - Option B - ara O2

Q: A number of mutations affect the expression of the lac operon in E. coli. The genotypes of several…

A: According to the question, we have to mention the strain which has the highest beta-galactosidase…

Q: If tryptophan is presence in the culture media of E.coli then _________.  the promoter will be…

A: This question is based on tryptophan operon. The trp operon is an operon-a group of genes that is…

Q: In E. coli, the trp operon is on by default, while the lac operon is off. Why do you think that this…

A:

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: Indicate what protein(s) will bind the DNA in the lac regulatory region of E. coli given the…

A: 1. When lactose as well as glucose are absent then no transcription will take place. The lac operon…

Q: The tryptophan operon is regulated by two methods. Describe in detail the regulation of the operon…

A: Genes are the functional unit of heredity. Operons are a group of genes under a single promoter. The…

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: The lac operon has which of the following characteristics? O 1) usually requires an activator…

A: In Eukaryotes all genes are separate and produce individual mRNAs on transcription. However, in…

Q: Strain P77 has a mutation in the lacO that prevents it from being bound by the lacI protein.…

A: Gene regulation at the level of transcription in bacteria is achieved by the operon model. Operon…

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: Mutations in the genes of an operon could affect the expression of its genes. For each statement,…

A: Introduction: Mutation can be defined as any change in DNA. This is any heritable and genetic change…

Q: If a researcher moves the operator to the far end of the operon, which of the following processes…

A: An operator is a genetic sequence that helps the DNA sequence to attach proteins in charge for…

Q: Under which of the following conditions would a lac operon produce the greatest amount of…

A: The “lactose operon” (lac operon) is the group of “3 structural genes” with a “single promoter.” It…

Q: Which RNA conformation favors transcription—the form with the antiterminator stem-loop or the form…

A: Genes are basic physical and functional unit of heredity. It is a part of DNA that has instruction…

Q: Explain how the following conditions will affect the regulation of the operon. (3 pts) Low cAMP…

A: Lac operon is a mechanism seen in the E coli that enables the proper metabolism in its body. The…

Q: Indicate what protein(s) will bind the DNA in the lac regulatory region of E. coli given the…

A: An operon can be defined as a unit of bacterial gene expression and its regulation.It consist of…

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: Give all possible genotypes of a lac operon that produces, or fails to produce, B-galactosidase and…

A: The diagrammatic representation of lac operon is given below: -

Q: What is a specific region in the trp operon that you could mutate so it expresses the trp operon in…

A: Introduction : The Trp Operon Codes For The Components Required For Tryptophan Production. An Operon…

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: 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: What would occur if the repressor of an inducible operon were mutated so it could not bind the…

A: The operon is the gene regulation system in prokaryotes that ultimately responsible for the…

Q: What is RNA polymerase doing on the lac operon in the presence of lactose? it is inactive and not…

A: In 1961, Jacob and Monod formulated the operon model in bacteria (E.coli) to know how the regulation…

Q: E. coli is given lactose as a nutrient source. This results in the activation of the lac operon only…

A: The solution to the above mentioned questions is as follows:

Q: When lactose is present lactose induces the activation of the genes in the lac operon by binding…

A: The Lac operon is an inducible operon that is inhibited by a repressor protein in the absence of…

Q: In the ara operon in E. coli cells, AraC will bind to its specific target DNA when O a. when there…

A: AraC protein can shift from the state of its preference to loop DNA (when arabinose is absent) to…

Q: In the presence of arabinose sugar and absence of glucose, which of the following conditions may be…

A: Arabinose could also be a five-carbon sugar that happens naturally and can be used as a result of…

Q: What is the difference between the role of the operator and the role of the promoter in an operon

A: According to Jacob and monod concept, operon is a group of contiguous structural genes showing…