The schematic below describes the status of lac operon in the absence

1.	The schematic below describes the status of lac operon in the absence of lactose. Which ONE of the following happens when lactose is present in the cell ?(A) Lactose binds to Pi and stops the transcription of i.(B) Lactose is converted to allolactose, which binds to Plac and results in the displacements of the repressor from O.(C) Lactose is converted to allolactose, which binds to the repressor protein and prevents its interaction with O.(D) Lactose has no effect on the status of the lac operon.
Answer» Correct option (C) Lactose is converted to allolactose, which binds to the repressor protein and prevents its interaction with O. Explanation: Lac operon is inducible operon here.

The schematic below describes the status of lac operon in the absence of lactose. Which ONE of the following happens when lactose is present in the cell ?(A) Lactose binds to Pi and stops the transcription of i.(B) Lactose is converted to allolactose, which binds to Plac and results in the displacements of the repressor from O.(C) Lactose is converted to allolactose, which binds to the repressor protein and prevents its interaction with O.(D) Lactose has no effect on the status of the lac operon.

Answer»

Correct option (C) Lactose is converted to allolactose, which binds to the repressor protein and prevents its interaction with O.

Explanation:

Lac operon is inducible operon here.

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