The accessibility of promoter regions of prokaryotic DNA is regulated by the interaction of proteins with sequences called

Operator

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Promoter

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Repressor

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Inducer

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Solution

The correct option is A
Operator

Lac operon is regulated by the interaction of repressor or inducer proteins with the operator sequences.

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Q. The accessibility of promoter regions of bacterial DNA in many cases regulated by the interaction of proteins with sequences termed

Q. Read the statements regarding the lac operon and choose the correct option
I. An inducer regulates the switching on and off of lac operon.
II.Repressor protein dissociates from operator region and prevents RNA polymerase from transcribing the operon.
III. In the presence of lactose, the repressor is activated by interaction with lactose.
IV. RNA polymerase has access to the promoter and transcription proceeds only when the repressor is inactivated.

In a transcription unit the activity of RNA polymerase at a given promoter is in turn regulated by whose interaction with accessory proteins? which affect its ability to recognise start sites?

Q. In prokaryotes, holoenzyme RNA polymerase attaches to the DNA sequence at the promoter site of template DNA during transcription. The sequence of that point where the RNA polymerase binds is:

Q. A functional complex comprising a cluster of genes including structural gene, a promoter gene, an operator gene and a regulator gene was discovered by

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The accessibility of promoter regions of prokaryotic DNA is regulated by the interaction of proteins with sequences called

The correct option is A Operator Lac operon is regulated by the interaction of repressor or inducer proteins with the operator sequences.

The correct option is A
Operator

Lac operon is regulated by the interaction of repressor or inducer proteins with the operator sequences.