One way that regulation is often studied is by examining the effects of mute ons. For example, mutations within the parts of the lac operon have been well studied. Which of these mutants would be considered a constitutive mutant (the operon is always on)? a mutation in CAP that prevents the binding of CAMP a mutation in one of the structural genes that prevents the transport of lactose into the cell a mutation that disables the promoter for the operon a mutation that disables the repressor

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: Remember that hexose kinase is an enzyme required for hexose metabolism, a process that takes a…

A: Cellular respiration is a catabolic pathway of the process of metabolism, where a series of chemical…

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: 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: 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: When lactose is first introduced into the medium, the lac operon is not induced and thus permease…

A: The lac operon in E.coli consists of 3 genes (lac Z, lac Y, lac A). The lac Z encodes beta…

Q: You can determine the regulation of an unknown operon based on descriptions like those in the table…

A: Introduction  The expression of genes is highly regulated in both prokaryotes as well as in…

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: 1d regulation of the lack operon by the lack repressor is an example of negative regulation. what in…

A: E.coli  bacterium intake glucose as a primary source of energy metabolism . When a glucose is scarce…

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

A: Option C is correct :

Q: Which enzyme will be produced in a cell where a nonsense mutation is present in the lac operon?

A: In genetics, the mutation in which a sense codon that corresponds to one of the twenty amino acids…

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: The role of allolactose in the lac operon

A: Lac Operon:This is a classic example of a gene regulation system found in E. coli.The key…

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

A:

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: nber that hexose kinase is an enzyme required for hexose metabolism, a process that takes a on sugar…

A: Operon is a regulatory unit in certain bacteria that helps in the regulation of the gene expression…

Q: You have cells that are mutant in CAP protein such that it cannot bind to CAMP. For these mutant…

A: Cap protein- In solution, the catabolite activator protein (CAP, also known as cAMP receptor…

Q: The DNA sequence before the protein coding region that determines when a gene is used is called the…

A: DNA is the genetic material of many organisms including the humans. The DNA contains information…

Q: A hypothetical operon, the O3M operon, controls the breakdown of omega-3 fatty acids. When omega-3…

A: Introduction:- An Operon is defined as the unit of gene expression and regulation. A single operon…

Q: Attenuation of the trp operon was viewed as a relatively inefficient way to achieve genetic…

A: Gene is the hereditary unit occupying a specific position in the chromosome and carries information…

Q: When lactose is added to growing culture of E. coli, the cells begin to make enzymes necessary for…

A: A small number of cells are first inoculated into a volume of sterile medium to grow E. coli in…

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: An activator (protein “V” – not encoded by this operon) binds to the activating region and RNA…

A: A transcriptional activator is a protein (transcription factor) that increases gene transcription of…

Gene Interactions

When the expression of a single trait is influenced by two or more different non-allelic genes, it is termed as genetic interaction. According to Mendel's law of inheritance, each gene functions in its own way and does not depend on the function of another gene, i.e., a single gene controls each of seven characteristics considered, but the complex contribution of many different genes determine many traits of an organism.

Gene Expression

Gene expression is a process by which the instructions present in deoxyribonucleic acid (DNA) are converted into useful molecules such as proteins, and functional messenger ribonucleic (mRNA) molecules in the case of non-protein-coding genes.