4b. Briefly describe the changes in gene expression that happen in the lac operon when lactose is present in the cell. Include changes in the action of RNA polymerase and the lac repressor protein.

Q: 1) The logic of the Lac operon was deciphered by using bacterial lac-operon mutants. Crucial to the…

A: Lac operon is a genetic unit in bacteria that helps in the metabolism of lactose in E.coli and lac…

Q: Using the lac operon as a model, explain the role of inducers, repressors, and inducer exclusion.

A: Genomic DNA (deoxyribonucleic acid) consists of both structural and regulatory genes. The structural…

Q: Explain how the Lac operon functions when there are low glucose levels and high lactose levels.  Be…

A: Operon:  A functional unit of genomic DNA made up of a group of genes that are controlled by a…

Q: Describe the main features of repressible operons.

A: An operon is defined as a particular set of genes present on a DNA that operates under same…

Q: 5g. A mutation has occurred rendering the regulatory protein unable to recognize the operator…

A: Operons are groups of genes involved in regulating a process and are transcribed as a single mRNA.…

Q: Describe the structure of an operon and state the role ofeach component of the operon.

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

Q: Utilizing lactose operon, how can we explain how induction controls enzyme synthesis 2. Use…

A: An operon is a group of genes that code for proteins that are involved in a single cellular…

Q: 2) Attenuation of the trp operon is controlled by the formation of stem-loop structures in the mRNA…

A: Tryptophan attenuation is a means of regulation of tryptophan biosynthesis. Normally when tryptophan…

Q: How does induction control enzyme synthesis using lactose operon?  2. Describe how level of a key…

A: By controlling the transcription of the mRNA which is needed for the enzyme synthesis, the genetic…

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: 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: Describe the binding of RNA polymerase, repressors, andactivators to the lac operon when both…

A: The lac operon is a group of genes which has a single promoter and the genes in this operon codes…

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: 1 Given the following genotypes, explain how the mutation (identified by a () superscript will…

A: Operon is a unit  consisting of one or more systems that function coordinately under the control of…

Q: 1. A. A mutation in E. coli is found that fails to induce the arabinose operon. Upon further…

A: A mutation is a change to the DNA sequence of a cell. This change can be due to rearrangements on…

Q: 3. Draw an anabolic operon with three biosynthetic genes for compound Q and a catabolic operon with…

A: ANSWER;-

Q: 4. Predict the level of genetic activity of the lac operon as well as the status of the lac…

A: In lac operon, structural genes responsible for lactose metabolism are all under the control of a…

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: Please discuss positive regulation with respect to lac operon.

A: An expression of a gene is evidenced by the synthesis of the polypeptide chain encoded by the…

Q: Explain how the following conditions will affect the regulation of the operon. Low cAMP levels; E.…

A: Operon is a sequence of DNA that consists of a set of genes which are involved in a particular…

Q: 5a. The table below summarizes expression of B-galactosidase (lacZ) and permease (lacY) from the lac…

A: 5a) Lac operon is an inducible operon that is expressed in the presence of a substance termed…

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: 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: Describe the regulation of the lac operon by lac repressor and CAP.

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

Q: Describe the main features of the lactose operon and inducibleoperons.

A: Inducible operons are those in which genes for certain enzymes can be turned on by the substrate of…

Q: 6. Which of the following is true about E. coll's lac operon? If there is no lactose present, the…

A: Option 1. For the lactose transport and metabolism of in E. coli and other bacteria, the lac operon…

Q: b How does the regulation of a negative indue and a hegative tepressible operon difer? what about a…

A: what is operon ? operon are genetically regulatory system found in bacteria and virus or prokaryotic…

Q: ii. ) If the lac operon in 'a' carried a mutation in the CAP binding site that rendered it…

A: First it has to be understood that : 1) the CAP-cAMP complex acts as a glucose sensor and is only…

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

A: In prokaryotes gene expression the gene expression occurs in a polycistronic manner. Polycistronic…

Q: Differentiate between inducible and repressible opero

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

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: For each of the growth conditions listed, what proteins would be bound to the lac operon? (Do not…

A: An operon consists of many related genes that are regulated by a common operator. The multiple genes…

Q: Predict a possible phenotype from the following mutations in the Lac Operon: a deletion in…

A: An operon is a functioning unit of DNA that contains a cluster of genes under the control of a…

Q: Explain how the lac operon is regulated by lac repressor and by catabolite activator protein.

A: Lac operon is a set of three genes present in bacteria and the genes are responsible for…

Q: 1c  In context with transcription of prokaryotic genes briefly describe the effect the lac…

A: Transcription within the prokaryotic cell is regulated by the complicated interactions of…

Q: In class, I compared how the Lac operon operates like a car's gas pedal and brakes. Describe this…

A: Lac operon is needed by the bacteria for the transport and metabolism of lactose.It is only…

Q: Predict the level of gene expression of the lac operon, as well as the status of the lac represso…

A: Operon functions as a single regulated unit composed of one or more structural genes, a promoter…

Q: Decide which operon each of the following characteristics applies to. Note: a description may apply…

A: Introduction "In E.coli And Other Bacteria, The Lac Operon Is An Operon Or A Set Of Genes With A…

Q: Explain the process of attenuation in the trp operon under the following conditi (i) No tryptophan…

A: Answer

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: 3.1 Which of the following is NOT true about the lac operon? I) The lac operon is use to help…

A: ANSWER;- B) is NOT true about the lac operon. Allolactose binds to the repressor so they can bind…

Q: Which statement does NOT explain why the lac operon would not be effectively regulated by an…

A: Lac operon is composed of a regulatory gene, promoter, operator, and structural genes. Lac operon is…

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.