In the Regulation of the Lac Operon, When Lactose Is

question 14

Multiple Choice

In the regulation of the lac operon, when lactose is present,

• A) lactose binds to the repressor, making it unable to bind to the operator and allowing transcription to proceed.
• B) lactose binds to the operator, making the repressor unable to bind to the operator and allowing transcription to proceed.
• C) the repressor binds to the operator, allowing transcription to proceed.
• D) lactose binds to RNA polymerase, allowing transcription to proceed even in the presence of the repressor.
• E) lactose binds to the repressor, causing it to bind to the operator and allowing transcription to proceed.

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