A novel operon is controlled by two regulatory systems that function in a hierarchy. The first is positive repre and influenced by the presence or absence of maltose. The second layer over rules the first and is a negative inducible system influenced by galactose. Select which regulatory proteins would be bound to the operator wit this operon in the absence of both galactose and maltose and then choose whether or not the structural gene transcripts will be produced. (Choose all that apply) Structural gene transcription is ON The repressor is bound but the activator is not. The activator is bound but the repressor is not. Neither regulator protein is bound Both the activator and repressor are bound. Structural gene transcription is OFF

Q: please answer Why is it useful to have two different mechanisms of positive regulation? I.e. why…

A: The L-arabinose operon, also called the ara or araBAD operon, is an operon required for the…

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: Which option is true when considering the regulation of cAMP and the Lac operon. If bacteria are in…

A: Introduction: An operon is a coordinated unit of genetic expression in a bacteria. Jacob and Monod…

Q: The only way that information is extracted out of DNA is through the transcription of MRNAS that…

A: According to our guideline we can answer only the first question. So upload the second question…

Q: If you add a co-eepressor to a repressor protein and that allows it to bind the operator is this a…

A: Inducible operon is one that is expressed in the presence of inducer. Constitutive operon is the…

Q: Illustrate simplified region (map) of the lac operon genes. Identify the genes present in this…

A: Lac operon is a control unit that consists of cluster of genes that helps in the metabolism of…

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: If lactose isn't present in the environment of an E. coli, what is the state of the lac operon? O a.…

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

Q: The trp operon in E. coli is a negative repressible operon. This implies that...   a. The trp…

A: The correct answer is:c. The trp operon makes use of a repressor and can be turned "on" (i.e., is…

Q: Imagine this scenario: In E.coli the Operon X encodes for Proteins Y, X and Z. Proteins Y, X and Z…

A: Introduction  The lac operon is a group of genes in bacteria that are regulated as a unit and are…

Q: Operon X produces three enzymes that convert Compound A to Compound B. The R gene makes the…

A: Gene expression is given on the basis of RNA. It is a process through which there is turning on of…

Q: Which of the following statements about the trp operon is false?

A: From above question the statement  If a mutation in region 2 prevents the formation of the 2 + 3…

Q: Consider a mutant of E. coli that has an inactivating mutation in the gene for the catabolite…

A: The lac operon is a negatively inducible operon.

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: Which of the following conditions is most likely to result in an increase rate of transcription of…

A: Lactose in bacteria is called beta-galactoside which is used as energy and as a carbon source.…

Q: Considering the fec operon described above, under which conditions would the operon be off? Choose…

A: The protein synthesis process is started from the operon region that is actually worked as a switch.…

Q: Regulation of the E. coli trp operon by attenuation requires the trp repressor protein. prevents…

A: An operon is a function unit of DNA containing a set of genes including structural gene, a…

Q: You identify a mutant that affects lac operon expression. You decide to investigate this mutant…

A: The concept of transcriptional regulation refers to the mechanisms by which cells control the…

Q: hich operons would be functional under these conditions?   What repressors would be made? (NOTE:…

A: Operon is a regulatory unit consisting of cluster of genes containing operator promoter and…

Q: operon

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

Q: 5f. Complete the diagrams below to reflect the proteins and any relevant cofactors (e.g. -…

A: The lac operon is an operon, or cluster of genes with one promoter (transcribed as one mRNA). The…

Q: A mutation that inactivates transcription and translation from the regulatory gene of an inducible…

A: An operon is a functional unit of genomic DNA that comprises a collection of genes that are all…

Q: Describe the main functional differences between the TRP and the Lac operons. Main functional…

A: TRP stands for tryptophan. It is an essential amino acid that must be obtained from the diet and is…

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: You are growing E. coli in a laboratory in order to study their operons. The growth media you are…

A: 1. What effect does lactose have on the bacterial cell’s lac operon? Answer:- It induces the operon,…

Q: Match each of the following mechanisms with how it can change the levels of gene products--whether…

A: Operons are DNA segments that include groups of associated genes. They consist of a promoter region,…

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: 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: For the following types of transcriptional control, indicate whether the protein produced by the…

A: An inducible operon is one which is not transcribed. For transcription of the molecule, it requires…

Q: You are studying the ABCD operon from a newly isolated bacterium. Which of the following would…

A: A Operon consists of segments of DNA , which carry codes for the synthesis of proteins. These genes…

Q: Expression of the operon ultimately results in the synthesis of the repressor (Q) and co-repressor…

A: A repressor is a protein that turns off the expression of one or more genes. The repressor protein…

Q: You have an E.coli strain in which the lac operon is not expressed when glucose is absent and…

A: Introduction :- E. coli is a bacteria that lives in healthy people and animals' intestines. The…

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

A:

Q: Which of the following describes the lac operon in E. coli when lactose and glucose is present in…

A: The lac repressor acts as a lactose sensor. It normally blocks transcription of the operon, but…

Q: he lac operon, determine whether genes will be expressed (on) or silenced (off) given the following:…

A: IN option A Lactose levels are high, glucose is low.---- Genes will be expressed(on).

Q: You have created a null mutation of tRNA synthase for trp-tRNA (the synthase enzyme attaches the trp…

A: A null mutation is a mutation that completely removes a gene or part of a gene.In this case, the…

Q: ou have isolated different mutants (reg1 and reg2) causing constitutive expression of the emu operon…

A: The operon's regulation can take place positively or negatively. If the negative operator is bound…

Q: Under low tryptophanyl-tRNA (tRNAtrp), we expect the trp operon to be expressed because:   Question…

A: Trp operon functioning in the bacterial system Escherichia coli consists of a set of genes that…

Bacterial Genomics

The study of the morphological, physiological, and evolutionary aspects of the bacterial genome is referred to as bacterial genomics. This subdisciplinary field aids in understanding how genes are assembled into genomes. Further, bacterial or microbial genomics has helped researchers in understanding the pathogenicity of bacteria and other microbes.

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