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Name: A mutation in the lac operator that prevents binding of the lac repres
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Description: A mutation in the lac operator that prevents binding of the lac repressor to the operator What is the correct option from the choices below?renders the lac operon transcriptionally inactive. leads to constitutive expression of the lac operon. affects

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Biology

A mutation in the lac operator that prevents binding of the lac repressor to the operator

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 9TYU: A mutation that inactivates the repressor gene of the lac operon results in (a) the continuous...

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A mutation in the lac I gene that prevents production of the lac repressor choose an answer below: renders the lac operon transcriptionally inactive. leads to constitutive expression of the lac operon. leads to constitutive expression of the trp operon. abolishes the effect of glucose on the transcription of the lac operon. none of the above
What is the function of cAMP in regulation of the lac operon? Group of answer choices it activates a repressor protein it activates an activator protein it inactivates an activator protein it inactivates a repressor protein
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A mutation in the repressor LacI causes it to lose the ability to bind its effector, allolactose. What will be the effect of this mutation in the presence of allolactose (assume glucose is absent)? a) LacI cannot bind to the lac operator (lacO) and transcription of the lac operon is blockedb) LacI is permanently bound to the lac operator (lacO) and transcription of the lac operon is blocked c) LacI cannot bind to the lac operator (lacO) and transcription of the lac operon increasesd) LacI is permanently bound to the lac operator (lacO) and transcription of the lac operon increases
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
The regulation of the lac operon in E. coli by Catabolite Activator Protein and glucose is an example of what type of regulation? Group of answer choices Positive inducible Positive repressible Negative inducible Negative repressible Constitutive
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The tryptophan (trp) operon is a repressible system. This means the genes are normally expressed, but the presence of trp can repress the operon the genes are normally repressed the genes are normally expressed when trp is present the genes are normally repressed, but the presence of trp can activate the genes
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