Which of the following is a characteristic feature of the lac operon in bacteria?

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It consists of three structural genes involved in lactose metabolism

It is involved in glucose metabolism

It is regulated by a repressor protein and an inducer molecule

It is constitutively expressed regardless of the presence of lactose

Answer: It is regulated by a repressor protein and an inducer molecule

Explanation:

The lac operon in bacteria is regulated by the lac repressor protein, which binds to the operator sequence and inhibits transcription in the absence of lactose. The presence of lactose acts as an inducer, causing the repressor to dissociate from the operator, allowing transcription of the lac genes.

MCQ Detail

Which of the following is a characteristic feature of the lac operon in bacteria?

Explanation:

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