If Lactose Is Present Which of the Following Occurs

When lactose is present. As the repressor protein detaches from the operator RNA polymerase can bind to the promoter transcription can occur and the three lactose degradation genes can be synthesized.

Solved Question 12 1 5 Points Which Of The Following Chegg Com

In the lac operon if lactose is present which of the following occurs.

. Thus the correct answer is option B. A Transcription of lacy lac z lac a genes occurs b Repressor is unable to bind to the operator c Repressor is able to bind to the operator d Both a and b are correct. A Lactose binds to the repressor changing its shape so that it can bind to the operator and the structural genes are not expressed.

Thus preventing it from binding to the operator site. Lactose or allolactose acts as inducer in Lac operon model. When lactose and its isomer are present in the cell allolactose will bind to allosteric sites on the repressor protein changing its conformation and rendering it inactive.

Due to which repressor will fail to bind the operator region and the RNA polymerase binds to the operator transcribing mRNA. Lac repressor protein will not be able to block the operator site of lac operon when lactose is present. CAMP is present and able to bind to CAP which can bind to the binding site.

Um And when lactose is available along lactose binds the laC repressor and changes its binding affinity towards the operator which makes a freeway for RNA polymerase to bind at this promoter. A bacteria contains two copies of the lac operon. In a bacteria possessing the lac operon which of the following occurs when glucose is low and lactose is abundant----- A.

When lactose is present in high concentration in growth medium it binds to repressor protein which then fails to bind to operator gene. Allolactose binds to the operator promoting RNA polymerase to bind to promoter and transcription. In the lac operon if lactose is present which of the following occurs.

Lactose bind to RNA polymerase which then binds to the promoter and transcribes the needed genes. So when lactose is present in the environment it activates the lack opera UN. In the lac operon if lactose is present which of the following occurs.

In the lac operon if lactose is present which of the following occurs. Coli was given by Jacob and Monod. When lactose is present in the culture medium.

Binding of allolactose with repressor protein changes the shape of repressor protein so it can no longer binds to the operator region. Lactose binds to the repressor changing its shape so that it can bind to the operator and the structural genes are not expressed. Lactose binds to the repressor changing its shape so that it can bind to the operator and the structural genes are not expressed.

When lactose is present in high concentration in growth medium it binds to repressor protein which then fails to bind to operator gene. 1473 students attemted this question. As the Repressor get inactivated it will not bind with the operator off the Lac operon so the transcription of structural gene will occurs.

An operon is just a group of genesa segment of DNA that functions as single. If both glucose and lactose are both present lactose binds to the repressor and prevents it from binding to the operator region. When lactose is present in a medium some of it will be converted to allolactose.

Lactose binds to the repressor changing its shape so that it can bind to the operator and the structural genes are not expressed. - When Lactose is present in media 7 Lactose allolactose act as inchricer of Lac operon As the level of Lactose increase in the medium it binds with the Repressor protein inactivate it. What is the most likely outcome for the bacterial cell when glucose is declining and lactose is present.

The block of lac gene transcription is thus lifted and a small amount of mRNA is produced. For lac operon which of the following occurs if lactose is present. In the lac operon if lactose is present which of the following occurs.

Transport of lactose into the cell is enhanced 22. This results in RNA polymerase binding to promoter region in gene and transcription of structural genes. This complex binds to the promoter region and stimulates the transcription of the three lac genes.

Beta-galactosidase acetylases the operon B. This results in RNA polymerase binding to promoter region in gene and transcription of structural genes. B Lactose bind to RNA polymerase which then binds to the promoter and transcribes the needed genes.

Lactose bind to RNA polymerase which then binds to the promoter and transcribes the needed genes. Thus forming an inactive repressor. When lactose enters the cell a small amount of it is converted into allolactose which binds to repressor causing a conformational change in the repressor and creating an inactive lac repressor.

The lac operon was one of the first operons to be discovered in E. Hence lac operon can express itself as the repressor protein is deactivated in presence of lactose. One on the bacterial chromosome and one on a plasmid.

O Allolactose binds to the lac regulator protein which does not bind to the operator and RNA polymerase transcribes the structural genes. Lactose or allolactose acts as an inducer in Lac operon model. Lactose permease cleaves lactose to glucose and galactose C.

Lactose bind to RNA polymerase which then binds to the promoter and transcribes the needed genes. The lacO site on the chromosomal lac operon is mutated and non-functional whereas the lacO site on the plasmid is functional. Lactose metabolism is increased by lactose binding to the operon D.

In lac operon when lactose is present it acts as an inducer molecule that binds to the repressor molecule. The concept of lac lactose operon of E. This allolactose binds to the repressor protein.

And the lack up run operates by the RNA preliminaries first of all binding to the promoter.

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