Use the blanks on the left hand side to put the following statements in order (use numbers or letters to designate the order). All of the statements refer to the diauxic (sequential) growth of a bacterium on the carbon substrates glucose and lactose (see textbook Fig 4.11 on diauxic growth). Remember, the lac operon contains the genes necessary for the lactose catabolism. The glucose substrate is completely consumed, at which time the repressor protein on the lac operon unbinds from the DNA molecule. The lactose substrate is catabolized by the active B-galactosidase enzyme. Glucose, as the preferred carbon substrate, is first consumed by catabolic enzymes that are constitutive (always present). After completion of translation, the B-galactosidase enzyme undergoes folding to form into an active enzyme that can breakdown lactose into its constituent monosaccharides. The messenger RNA code from the lac operon is translated by ribosomal RNAS to form lac-related enzymes, such as B-galactosidase. Glucose binds to a repressor protein that blocks the transcription of the lac operon. The now "open" operon is transcribed by RNA polymerase protein, resulting in messenger RNA code of the lac operon enzymes.

Q: In the lac operon system, do the inducers act at the transcription or translation level? Explain why…

A: The lactose operon (lac operon) consists of a regulatory gene (i-gene) and three structural genes -…

Q: irst image has info to answer second image question. Possible answers are A) The altered bacterium…

A: 1. Beta galactosidase will not be produced. If the promoter is placed in between lacZ and lac Y gene…

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: Please help me iwht this question explain how the regulation of the Lac Operon incorporate both…

A: An operon includes a group of genes that are expressed under the same promoter.

Q: The process in which the two-dimensional structure of RNA from the L region of an operon can either…

A: The strategy of creating an RNA duplicate of a grouping is transcription. The transcript, known as…

Q: Considering the Lac operon in E. coli, and chose what the expression of Lac Y would be in:  I) E.…

A: Lac l is the gene  which synthesizes repressor.Actually repressor is a protein that binds to the…

Q: Explain how the Lac operon works to regulate the expression of genes in bacteria. Explain the operon…

A: Bacteria has chromosome and some extra chromosomal plasmids.

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: Which of the following lac operon genotypes would allow for functional versions of all the…

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

Q: hich operons would be functional under these conditions?   What repressors would be made? (NOTE:…

A: Operon is a regulatory unit consisting of cluster of genes containing operator promoter and…

Q: operon

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

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: You are growing E. coli in a laboratory in order to study their operons. The growth media you are…

A: 1. What effect does lactose have on the bacterial cell’s lac operon? Answer:- It induces the operon,…

Q: 12) The top operon in E. coli is a group of genes that control the biosynthesis of tryptophan.…

A: Step 1: TRP operon in E. coli is a classical case of gene regulation in prokaryotes' It regulates…

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: RNAi can be performed in the all of the following organisms except....   E.Coli   fruit flies…

A: According to the question we have to find out that RNAi can be performed in all of the following…

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: Orca is a new type of E. Coli bacterium. Suppa is a nutrient that Orca needs to survive. Suppa can…

A: The lactose operon, also known as the lac operon, is a gene that is actually needed for the…

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