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The Lac Operon Solutions Library

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14 solutions

The Lac Operon

Q. The expression of lac operon in an E. coli cell missing the gene that encodes for the lac repressor will:A. increase when lactose is present.B. dec...

Solved • Oct 21, 2018

The Lac Operon

Q. If the lac repressor were altered so it could not release lactose once lactose was bound to it then you would predict that:A. The repressor could n...

Solved • Sep 30, 2018

The Lac Operon

Q. Gene expression from the lac operon can be controlled in many ways, including a robust negative regulation strategy. Select mutations that would re...

Solved • Sep 25, 2018

The Lac Operon

Q. A deletion of the operator sequence in the lac operon would:A. never express lac structural genes.B. not bind the repressor and constitutively expr...

Solved • Sep 14, 2018

The Lac Operon

Q. Which region(s) of the lac operon affect the binding of RNA polymerase? Check all that apply.A. CAP binding siteB. lacOC. lacZD. lacYE. lacA

Solved • Sep 1, 2018

The Lac Operon

Q. When the lac operon is turned on, it is said to be under:A. Regulatory controlB. Negative controlC. Combinatorial controlD. Negative control

Solved • Aug 15, 2018

The Lac Operon

Q. The lac operon is usually in the _____ position and is activated by a/an _____ molecule.A. off, repressorB. on, repressorC. off, inducerD. on, inducer

Solved • Aug 14, 2018

The Lac Operon

Q. Explain the role of allolactose in regulation of the lac genes.

Solved • Aug 3, 2018

The Lac Operon

Q.  Is the absence of the lac repressor sufficient for initiation of transcription of the lac operon?

Solved • Jul 26, 2018

The Lac Operon

Q. How does the lactose regulate the inducible system for transcription of the structural and regulatory genes of the lac operon?

Solved • Jun 20, 2018

The Lac Operon

Q. If E. coli bacteria are grown in the absence of lactose: a. The repressor will not bind the operator allowing transcription of the lac operon genes...

Solved • Jul 31, 2017

The Lac Operon

Q. If E. coli bacteria are grown in the presence of lactose: a. The repressor will bind the operator allowing transcription of the lac operon genesb. ...

Solved • Jul 31, 2017

The Lac Operon

Q. In the Lac operon, the protein that binds to the operator to prevent transcription is:  a. The repressor b. RNA polymerase c. DNA polymerase d....

Solved • Jul 31, 2017

The Lac Operon

Q. In the Lac operon, the attachment site for RNA polymerase is:  a. The operator b. The promoter c. The repressor  

Solved • Jul 31, 2017