If there was a mutation such that the lac I protein could no longer bind lactose, but could still bind Lac O, under which condition would you see high expression of the lac operon? There would be no condition under which you would see high expression of the lac

Q: Describe the regulation of the lac operon when lactose is present and glucose is absent

A: In 1961, F. Jacob and J. Monod proposed the operon model to explain the genetic basis of enzyme…

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: When an individual drink's a product with lactose (e.g., whole milk), what happens to the repressor…

A: Lac Operon consist of of an operator region promoter region and structural gene region. This Operon…

Q: Under what conditions is lac repressor bound to the lac operon?

A: Lactose operon (Lac operon) was discovered in Escherichia coli. This is studied to understand the…

Q: describe the actions of the normal and mutated lac operon in absence of lactose

A: The Lac operon is a group of genes with a  single promoter. It takes place in prokaryotes(bacteria).…

Q: The trp operon, found in E. coli, is a group of genes that encode biosynthetic enzymes for the amino…

A: When tryptophan levels are low tryptophan operon  is induced to transcribe structural genes so that…

Q: Describe  the regulation of the lac operon when lactose is present and glucose is present  Your…

A: The operon consists of a series of struc­tural gene like Z, Y and A. a segment of DNA called an…

Q: b) A haploid E. coli strain cultured in a lactose containing medium failed to transcribe the genes…

A: An operon is a gene expression and regulation unit of the bacteria that consists of the following…

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: In the lac operon of E. coli, if glucose levels increase while lactose levels decrease, what will…

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

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: Attardi et al (1963) found out that lactose operon mRNA synthesis in E. coli increased with the…

A: Introduction Operon is a genetic regulatory system found in bacteria and their viruses that clusters…

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: A bacterial cell is mutated and cannot create the repressor protein associated with the Lac operon.…

A: Lac operon is associated with uptake and metabolism of lactose. It has several components such as a…

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: How is glucose involved in positive control of the lac operon?

A: A set of genes present in E.coli. that regulates the uptake of lactose from the surrounding…

Q: In order for the lac operon to be triggered, lactose must be present and ________.   a. cAMP levels…

A:

Q: A mutation in the lac I gene that prevents production of the lac repressor choose an answer below:…

A: lac operon also known as lactose operon was discovered by F. Jacob and J. Monod, for that, they…

Q: you have a cell that carries mutations in the lac operon repressor gene that render it unable to…

A: The simple concept behind the action of the lac repressor gene is to bind to the lac operon operator…

Q: Which enzyme will be produced in a cell where a nonsense mutation is present in the lac operon?

A: In genetics, the mutation in which a sense codon that corresponds to one of the twenty amino acids…

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: Describe the organization of the lac operon.

A: Step 1 Inducible Operon System (Lactose Operon) is a regulated operon system in which the structural…

Q: An E. coli cell acquires a mutation in the gene that encodes CAP. The mutation affects the…

A: The transcription is a process through which information in the DNA molecule is transcribed into…

Q: What is the function of cAMP in the regulation of the lac operon and how is the production of cAMP…

A: The Lac operon is a set of genes in prokaryotic cells that regulate lactose metabolism. An operator…

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: Mutation in the regulatory gene in the lac operon results in the formation of an inactive repressor.…

A: The lac operon is an operon, or group of genes with a single promoter.The genes in the operon encode…

Q: What is the difference between positive regulation of the lac operon and negative regulation of the…

A: The lac operon is a set of three bacterial genes under the control of a single promoter which is…

Q: . Mutants were isolated in which the constitutive phenotype of a missense lacI mutation was…

A: In an experiment, the mutants were isolated in which the constitutive phenotype of a missense lacI…

Q: You mutated the gene encoding the cyclic AMP receptor protein (CRP). In this mutant, the CRP is…

A: Operon is a gene regulatory structure that contains clusters of genes and these clusters of genes…

Q: ac operon.  Drag the listed molecules to their corresponding bin. Reset Help   ONPG IPTG X-Gal…

A: ONPG - beta-galactosidase cleaves this molecule to form a visible yellow product. Explaination:  The…

Q: What is the effect of a mutation in the allosteric site of the Lac Repressor protein?

A: Lac operon (often called lactose operon) is an important operon sequence required for the metabolism…

Q: Describe the probable genetic defect that abolishes the sensitivity of the lac operon to the absence…

A: The major carbohydrate source for bacterium are Glucose and Lactose. Glucose is is first choice of…

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: Assuming that the level of glucose is low, a mutation in the repressor associated with the lac…

A: The lac operon which is also known as lactose operon is a set of genes that are specific for uptake…

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: If an E. coli cell is exposed to glucose, what happens? O A) CAMP levels are increased and the…

A: The lac operon of E. coli contains genes involved in lactose metabolism. It's expressed only when…

Q: For some time it was not clear whether lac repressor inhibits lac operon transcription by inhibiting…

A: Lac operon is a transcriptional regulation of lactose metabolism seen in prokaryotes. It was…

Q: For some time, it was not clear whether lac repressor inhibits lac operon transcription by…

A: The binding of the lac repressor to the RNA(ribonucleic acid) polymerase of the lac transcription…

Q: In the lac operon, the product of structural gene lacz is capable of

A: Lac operon is a gene expression regulatory system that is responsible for the transport and…

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: A. The gene that regulates the production of the Lacl protein is found further upstream of the lac…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: There is a mutation in sequence of the lac operator that prevents the lac repressor from being able…

A: Gene expression is regulated at the level of transcription by operon systems. In prokaryotes,…

Q: Which of the following statements is false?a) A derivative of lactose serves as an inducer of the…

A: Introduction: In bacteria, an operon is a coordinated component of genetic expression. In 1961,…

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…

Q: If you made a mutation in the operator region of the lac promoter such that LacI can no longer bind…

A: Lac operon Lac operon or lactose operon is a negatively regulated operon containing operator gene,…

Learning and memory

Learning is defined as a relatively permanent and irreversible adaptive change in behavior. It always results from experience. The ability of an organism to store and recall the effects, sensations, and knowledge gained through learning and experience is called memory.