10. a. Describe an operon? b. How lac operons controls gene expression in bacteria

Q: What is the default state of the lac operon? a. LacI repressor is sitting on the operator sequence…

A: Lacl repressor is sitting on a operator sequence and blocks RNAP from transcribing lacZYA

Q: What is the effect of high levels of glucose on the lac operon?a. Transcription is stimulated.b.…

A: An operon is found in bacteria and viruses as a genetic regulatory system. The gene coding for…

Q: Name and describe two types of constitutive mutants of the lactose operon.

A: Operon can be defined as an operating unit, which is nothing but gene clusters that are located…

Q: Pick six “partial diploid” lac operon problems from the lac operon practice sheet.  (Those are the…

A: i) The repressor (l-d) is defective and can't binds with the operator. So, the system remains always…

Q: 40 The accepted term for the functional investigation of a gene that starts with the gene sequence…

A: Genetics is the branch of biology that deals with the study of genes and their inheritance.

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 the terms: Transformation Operon Recombination

A: Hello you have asked question with multiple subparts. We will be able to answer only first three.…

Q: Compare and contrast the lac operon and repressible operon systems.

A: Expression of each and every gene is not always required in an organism. Gene expression must occur…

Q: 1. Complete the following table based on your lac operon simulations. Absence of lactose Presence of…

A: An operon is a group of genes that are transcribed at the same time. The lac operon consists of…

Q: 1. Explain why catabolite repression is used in regulating the lac operon and describe how it…

A: Repression by glucose of beta-galactosidase synthesis is spontaneously reversible in all strains of…

Q: what is an attenuator? (in context of a prokaryotic operon )

A: Operons are prokaryotic arrangements of multiple genes under the control of a single promoter. The…

Q: 1. why does the genome contain so many more genes for rRNA than mRNA? 2. why is it effective for a…

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

Q: Predict the effect on the activity of the lac operon of a mutation that disrupts the function of: a)…

A: The Catabolic Activator Protein (CAP) is a protein which acts as a positive regulating factor for…

Q: 1. Explain the functioning and regulation of the following operons: lac, trp. 2. Explain the…

A: Every organism have various charcyerstics why may or may not be similiar to each individual. Tgese…

Q: 4a. The diagram below represents (a) the lac operon in the OFF state and (b) lac operon in the ON…

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

Q: . Define operon and describe how operons affect how bacteria can regulate their gene expression.

A: In prokaryotes, one promoter is able to regulate multiple genes.

Q: 10. Modify the diagrams below to reflect the activation and repression of lac operon. Use arrows,…

A: The prokaryotic gene regulatory system is known as operon system in which the expression of…

Q: Operons______ . a. only occur in bacteria b. include multiple genes c. involve selective gene…

A: The correct answer is (b) include multiple genes

Q: 10. Modify the diagrams below to reflect the activation and repression of lac operon. Use arrows,…

A: Lac operon contains genes involved in metabolism. The genes are expressed only when lactose is…

Q: Prokaryotes use operons to regulate their transcripts. What does it mean for them to be…

A: Prokaryotes are a simpler form of life. It lacks sophisticated machinery and membrane-bound…

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: If glucose is not available and lactose is absent from the environment, what is the status of…

A: Hi! Thank you for the questions. As you have posted multiple questions, I will be answering the…

Q: 5. Briefly describe the lac operon and how it controls the metabolism of lactose.

A: An operon is a group of genes that are expressed under the same regulatory sequences.

Q: Think about the situation where there is an increased concentration of both glucose and allolactose…

A: Lacoperon is an operon that consists of a group of genes in E.coli which is required for the…

Q: 1. Predict the effect of each situation on the Lac or Trp operon. Lac operon is ON Lac operon is OFF…

A: Operon is the group of genes that are expressed under the same regulatory sequences.

Q: 4. A mutant strain of E. coli produces B-galactosidase in the presence and the absence of lactose.…

A: An operon is defined as a set of structural genes regulated by a common promoter in bacteria.

Q: 1. Compare and contrast gene regulation of a Lac operon when there is little glucose in the…

A: The cellular environment has an impact on cellular action which is achieved by controlling the…

Q: 2. You are studying the regulation of the lactose operon in Escherichia coli, by measuring…

A: The lac operon is responsible for the entry and metabolism of lactose in E. coli as well as most…

Q: 2. What is attenuation and what is its significance in prokaryotic gene regulation? Explain…

A: Gene expression is defined as a process which is used by cells to convert the instructions coded in…

Q: An operon that encodes enzymes that degrade ampicilin is most likely __________ . A) inducible B)…

A: Option A and B are the answer. An operon that encodes enzymes that degrade ampicilin is most likely…

Q: 1. What are the main elements of the lac operon and their functions?

A: NOTE- Since you have posted multiple questions So we will be solving the first question for you. As…

Q: 1. A strain of E. coli is genetically engineered in which the lacZ and lacY removed and replaced…

A: Operon acts as a single regulated unit having one or more structural gene, promoter gene, a…

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: Why do eukaryotic cells not have a lac operon? A. Eukaryotic cells cannot transcribe multiple genes…

A: Lac operon is a gene regulating unit present in prokaryotes. It consists of a promoter, repressor,…

Q: (iii) Mark all sentences as true or false. (A) RNA polymerase binds to the operator sequence of the…

A: RNA polymerase is defined as the enzyme that catalyzes the transcription of DNA into RNA. It is a…

Q: I. Answer the following: 1. What are the main elements of the lac operon and their functions? 2.…

A: Definition:- An operon is a group of genes that are transcribed at the same time.  These are a…

Q: How do repressors reduce transcription of an operon? A) recruit RNA polymerase to promoters B)…

A: Repressors are the proteins that has a negative effect on the expression of gene. These are those…

Q: Tryptophan (Trp) attenuation is an extra mechanism of regulation of trp operon when trp level is too…

A: The trp Operon, is nothing but a sequence of DNA that is responsible for the regulation of formation…

Q: How might the regulation of the lac operon change if a point mutation occurred that blocks the…

A: Lac Operon consists of structural (z y and a) , regulatory (I), promoter and operator genes in the…

Q: (iii) What is the function of the promoter in the bacterial operon?

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

Q: Provide the SIGNIFICANT differences between the following: 1. Operon Systems Inducer/Lac…

A: An operon is a cluster of functional genes which are regulated by the common operator. Operons…

Q: 7. If a researcher moves the promoter for the lac operon to the region between the beta…

A: Lac operon is a bacterial gene and it works through a repression mechanism. lac I produces repressor…

Q: i)Describe a strategy for regulation of transcription in eukaryotes. ii)Explain how this strategy…

A: Transcription: The process of formation of the RNA transcript from DNA template by the enzyme DNA…

Q: Explain the steps in Trp Operon. Take note, important enzymes and chemicals are needed in your…

A: The trp operon is a group of genes that codes for the molecules that are responsible for the…

Q: 9. A single base substitution mutation in lacY gene of the Lac operon would render the entire lac…

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

Q: Explain what is Lactose operon and how does the system work .

A: The lactose operon also called as lac operon is a metabolism of lactose in E. coli in which operon…

Q: 3 5. Suppose you perfe would you expect 6. If you did not get the operon was c

A: B -Galactosidase -- B - galactosidase belongs to class 3 ,hydrolases .B gal belongs to subclass of…

Q: Highlight the main points of lac operon operation.

A: In prokaryotes, gene regulation is most prominent during the start of transcription. As a result,…

Q: 1) A. What is the difference between a repressible vs, an inducible operon?   B. Using diagrams…

A: The answer is given below

Q: What are the effects of the following conditions on Lac operon of bacteria

A: Lac Operon is a set of three structural genes regulated by a common promoter and maintain lactose…