Like the lac operon, the hexose operon is controlled by a separate regulatory protein under the control of its own promoter (see the schematic of the operon below). The hexose regulatory protein is sensitive to fatty acyl CoA levels. When all hexose fuel sources are depleted, the bacteria switch to lipid metabolism and fatty acyl COA levels increase. This turns expression of the hexose operon off. +1 +1 Regulatory Gene regulator Poperon Hexose Operon Genes regulator promoter operon promoter e. The regulatory protein that controls expression of the hexose operons is a transcriptional ACTIVTOR or REPRESSOR (circle one).

Q: If an abnormal repressor protein could still bind allolactose but the binding of allolactose did not…

A: The Lac operon contains genes responsible for the transportation and breakdown of lactose. These…

Q: If an abnormal repressor protein could still bind allolactose but the binding of allolactose did not…

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

Q: The TRP operon functions by attenuation. Briefly explain how attenuation works and why it is…

A: Trp operon or the tryptophan operon is a group of genes that are responsible for tryptophan enzymes.…

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: 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: Consider the lac operon of E. coli. Specifically, explain the following: a. Describe the overall…

A: The lac operon is a collection of genes located in the chromosome of Escherichia coli, and it…

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: 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: If an abnormal repressor protein could still bind allolactose, but thebinding of allolactose did not…

A: Deoxyribonucleic acid is a particle made out of two polynucleotide chains that loop around one…

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: The polycistronic Histidine Operon in E. coli encodes all of the proteins necessary for the…

A: An operon is a gene unit of bacterial system whose transcription is positively and negatively…

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: A novel operon is controlled by two regulatory systems that function in a hierarchy. The first is…

A: An operon can be defined as the cluster of coordinately controlled and regulated genes. It is…

Q: Which of the below conditions would result in the lowest level of expression from the lac operon…

A: Option C is correct :

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: If the levels of both Glucose and Lactose were low in a bacterial cell, describe the state of the…

A: In bacteria and their viruses, an operon is a genetic regulatory structure in which genes coding for…

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: Examine the following theoretical operon (gen) in E. coli which contains structural genes (genC,…

A: Question 1:The genB gene's translation would be prematurely stopped by a nonsense mutation in the…

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

A:

Q: Examine the following theoretical operon (gen) in E. coli which contains structural genes (genC,…

A: Question 1: B. The amino acid is bound to the regulator, causing the regulator to bind to the…

Q: Bacteria with a lac phenotype are unable to use lactose because of some defect in expressing the…

A: Answers - 1) False 2) True 3) True  There are 3 structural genes in lac operon - lac Z, lac Y and…

Q: For the lac operon, when glucose is absent and lactose is present ___________       None of the…

A: Question - For the lac operon, when glucose is absent and lactose is present ___________…

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: The tryptophan operon is regulated by two methods. Describe in detail the regulation of the operon…

A: Genes are the functional unit of heredity. Operons are a group of genes under a single promoter. The…

Q: Under what conditions would you expect to see high levels of expression of the structural genes in…

A: Please find your answer in step2:

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: Suppose you have an E. coli in which the gene that codes for the lac repressor protein has been…

A: Lac operon is an inducible type of operon that involves the breakdown of lactose in E.coli.  The lac…

Q: Regarding the tryptophan operon in bacteria, in the presence of tryptophan, tryptophan binds to the

A: Q. Regarding the tryptophan operon in bacteria, in the presence of tryptophan, tryptophan binds to…

Q: Consider the following scenario: A bacteria cell is surrounded by lactose, but there is no glucose…

A: Lac operon is an operon model takes place in E coli bacteria . It consists of :- A)Promoter  B )…

Q: Describe the role of the CRP–cAMP complex in positiveregulation of the lactose operon in E. coli.

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

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.