In the lac operon, the product of structural gene lacY is capable ofrepressing the lactose operontransporting lactose into the cellcleaving the lactose disaccharide into glucose and galactoseproducing zinc finger nucleasesforming lactose from lactose precursors

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Description: In the lac operon, the product of structural gene lacY is capable ofrepressing the lactose operontransporting lactose into the cellcleaving the lactose disaccharide into glucose and galactoseproducing zinc finger nucleasesforming lactose from lactos

Lac operon It contains a operator, a promoter, repressor, and structural gene. The structural gene…

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Biology

In the lac operon, the product of structural gene lacY is capable of

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter14: Gene Regulation

Section: Chapter Questions

Problem 2TYU

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A mutation that inactivates the repressor gene of the lac operon results in (a) the continuous transcription of the structural genes (b) no transcription of the structural genes (c) the binding of the repressor to the operator (d) no production of RNA polymerase (e) no difference in the rate of transcription
In the lac operon, the product of structural gene lacZ is capable of ________. producing zinc finger nucleases transporting lactose into the cell repressing the lactose operon forming lactose from lactose precursors cleaving the lactose disaccharide into glucose and galactose
Which of the following molecules is an inducer of the lac operon:a. Galactose d. Isothiocyanateb. Glucose e. cAMPc. Allolactose f. Lactose
Assuming that the level of glucose is low, a mutation in the repressor associated with the lac operon of E. coli which prevents binding of the repressor to lactose should result in_____ Constitutive expression of the lac operon genes ito sagot ko Lack of expression or reduced expression of the lac operon genes under all circumstances Expression of the genes only when lactose is present Expression of the genes only when lactose is absent
What are the effects of the following conditions on Lac operon of bacteria? Please do not forget to mention about the role of repressor, activator, RNA polymerase in each case. Glucose is absent and lactose is present Glucose is present and lactose is present Glucose is present and lactose is absent
What are the effects of the following conditions on Lac operon of bacteria? Do not forget to mention about the role of repressor, activator, RNA polymerase in each case! A) Glucose is absent and lactose is present B) Glucose is present and lactose is present C) Glucose is present and lactose is absent
When both glucose and lactose are present (regarding the lac operon): Group of answer choices cyclic AMP is high so transcription occurs the lac repressor binds with the lactose and transcription occurs RNA polymerase is able to bind to the operator so transcription occurs cAMP is low, and transcription is turned off
When lactose is present lactose induces the activation of the genes in the lac operon by binding the repressor lactose represses the activation of the genes in the lac operon by binding the repressor lactose induces the activation of the genes in the lac operon by binding the operator lactose represses the activation of the genes in the lac operon by binding the operator
describe the actions of the normal and mutated lac operon in absence of lactose
Given the following mutant and conditions, predict the expression of the lacZ gene (no expression, basal level, activate level of expression). A mutant of E. coli that has a mutation in the operator of the lac operon that prevents the repressor from binding. + glucose, - lactose + glucose, + lactose – glucose, + lactose
In the lac operon system, lactose is considered the ___________, and when the gene lacI is mutated such that the protein it produces cannot bind to lactose (IS mutation), the lac operon is ________. Group of answer choices repressor; never expressed activator; constitutively expressed inducer; never expressed inducer; constitutively expressed structural gene; never expressed
Given the following mutant and conditions, predict the expression of the lacZ gene (no expression, basal level, activate level of expression). A mutant of E. coli has a mutation in the promoter of the lac operon that prevents RNA polymerase from binding. + glucose, - lactose + glucose, + lactose – glucose, + lactose