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Which of the following is required as an inducer(s) for the expression of lac operon?

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Question

Which of the following is required as an inducer(s) for the expression of lac operon?

Options

  • Lactose

  • Lactose and Galactose

  • Glucose

  • Galactose

MCQ
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Solution

Lactose

Explanation:

The lac operon is a reversible operon. Lactose is the substrate for the enzyme beta-galactosidase, and it also controls the operon's on/off switch. As a result, it is known as an inducer.

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