What is the expression of the lac operon in the presence of lactose?Group of answer choicesThe lacI protein does not bind the lac operator so the lac operon is expressed.The lacI protein does not bind the lac operator so the lac operon is not expressed.The lacI protein binds the lac operator so the lac operon is not expressed.The lacI protein binds the lac operator so the lac operon is expressed.

Which of the following conditions would allow for the active transcription of the lac operon?ANSWERThe lac operon is transcribed constitutively.Lactose present, glucose absentLactose present, glucose presentLactose absent, glucose present

The lac operon is expressed when

Lactose or its analogues act as positive regulators of Lac operon by:Select one:a. Binding to repressor subunits so that the repressor cannot attached to operator locus.b. Attaching to I gene and preventing its expressionc. Attaching to promoter region and facilitating the biding of RNA polymerased. Increasing the synthesis of catabolic gene activator protein.Clear my choice

The inducer of the lac operon is lactose.

If E. coli bacteria are grown in the absence of lactoseMultiple Choicethe repressor will not bind the operator, thus allowing transcription of the lac operon genes.the repressor will bind the operator, thus allowing transcription of the lac operon genes.the repressor will not bind the operator, thus preventing transcription of the lac operon genes.the repressor will bind the operator, thus preventing transcription of the lac operon genes.No answer is correct.