What is lac operon? Draw and/or identify the status of the lac operon in a given set of environmental conditions and/or cell mutations.

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: 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: 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: Explain how the lac operon is both positively and negativelycontrolled.

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

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: 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 are the main elements of the lac operon and their functions?

A: Operon is the the prokaryotic gene regulatory system in which the expression of polycistronic mRNA…

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: 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: 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: 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: 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: 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: What was the eventual hypothesis proposed bythe researchers to explain the function of the lacI gene…

A: To define the function of the lacI gene and the regulation of the lac operon.

Q: operon

A: Answer: Operon: In genetics, an operon is a functioning unit of DNA containing a cluster of genes…

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: 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: What is the function of each of the parts of the lac operon (promoter, operator, CAP binding site,…

A: The lactose operon (also called the lac operon) is a group of genes present in E. coli and other…

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: How does the lac operon help E. coli conserve energy and other resources?

A: Escherichia coli, also known as E. coli, is a Gram-negative, facultatively anaerobic, rod-shaped,…

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: Describe a bacterial operon's structural advantage.

A: *NOTE: Kindly repost for other question. Dear Student as per the guidelines we are supposed to…

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: 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: 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 led researchers to conclude that a repressor moleculeregulates the lac operon?

A: Lac operon is regulated by the lac repressor molecule.

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: What is the major difference between the mechanism involved inattenuation and riboswitches and the…

A: Attenuation is a mechanism that controls gene expression in a bacterial operon and causes premature…

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: 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: How does the level of tryptophan alter transcription of the trp operon?

A: An operon is defined as the set of structural genes that are under the regulation of a common…

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: Outline the operon theory using the lac operon as anexample

A: Operon consists of genes placed in sequential order. Lac operon has following genes- Regulator gene…

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: 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: 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: What structural features does the trp operon share with the lac operon?

A: Genes are collections of nucleotides that code for a specific protein. For protein synthesis to…

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: 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: With respect to the lac operon, what is allolactose?

A: It is an operon required for the transport and metabolism of lactose in E.coli and many enteric…

Q: The lac operon produces enzymes that allow the bacteria E. coli to metabolize lactose, it is in an…

A: Operon is a bacterial and viral genetic regulation mechanism in which genes coding for functionally…

Q: What is catabolic repression? How glucose concentration regulate catabolic repression of lac operon?

A: Genes are the functional segments of DNA. The cluster of these functional segments called genes is…

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.

Q: What role does an operon play in the synthesis of enzymes in prokaryotes?

A: Prokaryotes are a microscopic single-celled organism that has neither a distinct nucleus with a…

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.