lac operon is regulated by some nutrients in whic Select one: O a. Fructose induce lac operator O b. IPTG induces lac operon. O c. Glucose induces lac operon. O d. Trp induces lac operon. O e. Galactose inhibits lac operon.

Q: All of the following statements about the repressor of the lac operon of E. coli are true EXCEPT…

A: The lac operon is a clustered group of related genes that are transcribed as a single unit. These…

Q: What happens with a 50/50 split bewteen glucose and lactose in the lac operon? in the lac operon the…

A: The lac operon is a set of genes that are used in the metabolism of lactose in E. coli. The genes in…

Q: What type of operon is arabinose operon? Dose the repressor bond when arabinose is I present or…

A: Introduction  An operon is a functional segment of Dna that houses a collection of genes that are…

Q: Which of the following molecules is an inducer of the lac operon:a. Galactose d. Isothiocyanateb.…

A: The structural genes lac z, lac y, and lac in the lac operon code for beta-galactosidase (converts…

Q: When tryptophan levels in the cell are low   A the trp repressor will be bound and the operon…

A: DNA and RNA are nucleic acids present in the organisms. DNA is the deoxy ribose nucleic acid whereas…

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: Describe  the regulation of the lac operon when lactose is present and glucose is present  Your…

A: The operon consists of a series of struc­tural gene like Z, Y and A. a segment of DNA called an…

Q: IPTG can be used in the laboratory as a synthetic inducer of the lac operon, instead of lactose.…

A: Lactose operon is an example of inducible operon in which the expression of downstream genes will be…

Q: . For each of the following growth conditions, whatproteins would be bound to lac operon DNA?…

A: An operon consists of many related genes that are regulated by a common operator. The multiple genes…

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: lactose a. Activation CAP lac I repressor allolactose b. Repression CAP lac I repressor CAMP с CAMP…

A: Lac operon consists of the cluster of genes. The letters depicted in the lac operon below are as…

Q: 1. A. A mutation in E. coli is found that fails to induce the arabinose operon. Upon further…

A: A mutation is a change to the DNA sequence of a cell. This change can be due to rearrangements on…

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: Select the correct statement about the trp operon: high levels of tryptophan promotes high…

A: Introduction :  Lac Operon is a collection of genes with a single promotor that encodes genes for…

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: Part A If E. coli bacteria are placed in an environment that contains both glucose and lactose, the…

A: When glucose concentrations are low, E. coli can use other sugars as fuel. The c AMP-CAP protein…

Q: F’ lac I- O+ Z+/ lac I+ Oc Z- the genotype indicated would lead to what type of expression of…

A: Bacteria contain multicistronic arrangements for the expression of genes that are involved in a…

Q: What are the effects of the following conditions on Lac operon of bacteria? Do not forget to mention…

A: lac operon: - inducible operon. - Both positive and negative regulation. - Involved in lactose…

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: 2. The promoter (P) is the start site of transcription through the binding of RNA polymerase before…

A: The lac operon: The lac operon or the lactose operon is the most widely studied gene with respect to…

Q: (MC) What is the function of lactose in regulation of the lac operon? 1. activates a repressor…

A: Operons are a group of enzymes and regulatory sequences.

Q: Which of the following environmental conditions would be MOST likely to result in transcription of…

A: The transcription of the lac Oberon in an E.colicell is high levels of lactose and high levels of…

Q: Read the following statements about operons, and mark the FALSE one. O a. Prokaryotes use operons…

A: Operons are a group of genes that are regulated together in prokaryotic cells. They consist of…

Q: What are the effects of the following conditions on Lac operon of bacteria? Please do not forget to…

A: Lac operon is the inducible system of catabolic degradation of lactose. Lac operon is a combination…

Q: Which of the following diagrams best models the regulation of the trp operon when tryptophan is…

A: An operon is a polycistronic gene regulated by a common promoter and regulatory sequences. Operons…

Q: In the absence of lactose and the presence of glucose the lac operon is strongly expressed . Lacl is…

A: Introduction:-Lactose metabolism genes are found in the lac operon of E. coli. It is only expressed…

Q: In the lac operon, the product of structural gene lacz is capable of

A: Lac operon is a gene expression regulatory system that is responsible for the transport and…

Q: What would occur if the repressor of an inducible operon were mutated so it could not bind the…

A: The operon is the gene regulation system in prokaryotes that ultimately responsible for the…

Q: What does RNA polymerase transcribe from the Lac Y gene on the lac operon? O beta-galactosidase O…

A: Lac Operon is a set of genes that are transcribed by the RNA polymerase which are solely responsible…

Q: In the tryptophan operon, if the leader peptide is translated normally   A region 2 will pair with…

A: Answer,  In bacteria, an additional, mechanism termed transcriptional attenuation negatively…

Q: What is RNA polymerase doing on the lac operon in the presence of lactose? it is inactive and not…

A: In 1961, Jacob and Monod formulated the operon model in bacteria (E.coli) to know how the regulation…

Q: Which statement does NOT explain why the lac operon would not be effectively regulated by an…

A: Lac operon is composed of a regulatory gene, promoter, operator, and structural genes. Lac operon is…

Q: In the ara operon in E. coli cells, AraC will bind to its specific target DNA when O a. when there…

A: AraC protein can shift from the state of its preference to loop DNA (when arabinose is absent) to…

Q: The figure above shows the structure of lac operon. Which of the following BEST describes what…

A: These are the operon gene found in prokaryotes and the lac operon is an inducible operon.

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.