Decide which operon each of the following characteristics applies to. Note: a description may apply to both. a. lac operon b. trp operon 68. repressible 69. Turned off when end product is present (feedback inhibition) 70. Promoter, activator region, and 3 genes 71. Repressible 72. contain operator and promoter regions as well as transcript units of at least two or more coding genes 73. Codes for catabolic enzymes that break down lactose 74. Inducible 75. Promoter, activator region, and 5 genes 76. Codes for anabolic enzymes that help manufacture tryptophan 77. Lactose is the co-inducer 78. Turned on when substrate is present 79. Tryptophan is the co-repressor 80. Regulatory gene segments

Q: When researchers analyzed the gad operon they found the following: Expression of the gad operon at…

A: Here we saw that mutant 1 is causing the expression of gad protein even at pH7 which was not…

Q: Draw out an example of a plasmid operon set up using amp resistance (outside the arabinose operon),…

A: Plasmid is the extrachromosomal DNA generally found in bacteria (prokaryotic cell) that can…

Q: Explain and give examples of Inducible & Repressible Operons. Describe what types of protein…

A: Inducer: Inducer is the substance that causes the gene for protein synthesis to be activated.…

Q: In the lac operon (above), what happens when glucose levels are low, but lactose levels increase?…

A: Operon is the gene regulatory mechanism present in prokaryotic organisms. It regulates the…

Q: Explain and give an example (trp operon) of how repressor operons function in prokaryotes.

A: Repressor binding physically  blocks RNA polymerase from transcribing  structural genes.

Q: A researcher was trying to determine whether two molecules (molecule A and molecule B) were co-…

A: CoRepressor - The function of the corepressor is to induce transcriptional silencing or to repress…

Q: Describe operons in your own words, as if you were explaining what an operon is to someone who knew…

A: DNA is the biomolecule which contains all biological information in an organisms . the part of the…

Q: Operons can not be:   a. Negatively regulated b. Positively regulated c. Constitutive d. Inducible…

A: The workhorses of a body are proteins. All or every function of the body are carried out by the…

Q: Can you explain what exactly operon is? Instead of just copying and pasting from google, can you…

A: DNA  DNA are the inheritable unite which passes from parents to their offsprings. DNA contains genes…

Q: Explain why large amounts of transcript result when a bacterium with a lac Operon is in a medium…

A: Transcription is the process by which RNA is synthesized from DNA. The messenger RNA or mRNA…

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: Propose a final method of gene regulation of the Up Lateoperon using an updated drawn figure of the…

A: An operon is a part of the DNA where a few genes are clustered together that are transcribed…

Q: Illustrate the cellular respiration equation and label properly.

A: Cellular respiration is a bunch of metabolic responses & cycles that occur in the cells of…

Q: a. The original constitutive operator mutations in thelac operon were all base changes in o1. Why…

A: The original constitutive operator mutations made in the lac operon involved base changes in the O1.…

Q: Describe the structure of the Lac operon. How is it turned on? How is it turned off?

A: The gene products of the lac operon are very important for lactose metabolism. This is crucial for…

Q: Explain the positive control of the lac operon A toxin was found to inhibit the production of CAMP…

A: Lac operon is the segment of DNA which includes cluster of genes for breaking down of lactose. The…

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

A: Inactivating mutations, also known as loss-of-function mutations, cause the gene product to have…

Q: operon

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

Q: Explain how an inducible operon is regulated (make sure you include an explanation of how the CAP…

A: An operon is a sequence of bases encoding one or more polypeptides, as well as the promoter and…

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: 1) The UR operon which is composed of sequences A, B, C, and D (which may or may not be genes of…

A: An operon may be considered as a group of certain genes which function together so as to regulate…

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: Strain LOLZ has a mutation in the lacI gene that results in a lacI protein that cannot bind…

A: Lac operon is the segment of DNA which is responsible for breaking down lactose into glucose and…

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: Strain HK180 has lac operon with a nonfunctional lacP. Otherwise all other parts of the operon are…

A: The promoter is a DNA sequence located upstream of the target gene to be transcribed, to which RNA…

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: Suppose that E. coli sustains a mutation in its gene for the lac operon repressor making the…

A: When lactose is not present in the medium operon does not transcribe because of the presence of lac…

Q: Which of the following statements about operons are true? (Check all that apply) Operons are common…

A: Ans: An operon is a cluster of the genes found in bacteria and viruses, these genes transcribed to…

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: What is an operon? Describe the functions of regulators, promoters,and operators.

A: The structure responsible for the regulation of genes in order to synthesize the associated proteins…

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 )…

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.