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: Study the depiction of the lac operon in Figure 11.2. Normally, the genes are turned off when…

A: The lac operon contains three genes: lacZ, lacY, and lacA. These genes are transcribed as a single…

Q: Glomerular colloid osmotic pressure is greater in the afferent end than in the efferent end of the…

A: Blood colloidal osmotic pressure (BCOP) is due to colloidal nature of blood. The blood is a mixture…

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: The graph below shows a growth curve of E. coli growing in a defined medium containing equal…

A: In the presence of both glucose and lactose, bacteria exhibit a complex growth pattern characterized…

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: 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: a Imagine that creatine phosphate, rather than ATP, is the universal energy carrier molecule in the…

A: Creatine phosphate cannot be a universal energy carrier molecule in the human body as it is an…

Q: e following genetic and cellular conditions.  You do not need to consider the role of CAP in your…

A: Upper operon -  Is is super repressor. Once it is present in the sequence, it can not be removed. If…

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: Analyze the following genotypes of the Lac Operon in E. coli. In each case, determine whether…

A: Lac operon is a regulation system in prokaryotes which present in their genome structure. Here…

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: Glucose absent, lactose absent     Glucose absent, lactose present     Glucose present, lactose…

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

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: that

A: The trp operon found in E coli bacteria . It's a group of genes that encode biosynthetic enzymes.…

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

A:

Q: As diagrammed below, some amino acid biosynthetic operons have stem loop structures in the mRNA.…

A: Option A is incorrect as without the formation of heparin the process of translation can not be…

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: The transcription of many bacterial genes relies on functional groups called operons, such as the…

A: Turning/switching genes on and off is referred to as gene regulation. Cells start to take on…

Q: Like the lac operon, the hexose operon is controlled by a separate regulatory protein under the…

A: Hexose operon is the set of structural genes, regulatory genes, promoter and operator sequence in…

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.

Transformation Experiment in Bacteria

In the discovery of genetic material, the experiment conducted by Frederick Griffith on Streptococcus pneumonia proved to be a stepping stone.

Plasmids and Vectors

The DNA molecule that exists in a circular shape and is smaller in size which is capable of its replication is called Plasmids. In other words, it is called extra-chromosomal plasmid DNA. Vectors are the molecule which is capable of carrying genetic material which can be transferred into another cell and further carry out replication and expression. Plasmids can act as vectors.