Which of the following acts as an inducer in the lac operon?

Which of the following acts as an inducer in the lac operon? Correct Answer lactose

When lactose is present in the medium, it binds to the repressor protein changing its conformation while preventing the former’s binding at the operator region. Thus the structural genes are transcribed and lactose is catabolized, therefore lactose acts as an inducer in the lac operon.

Related Questions

The lac operon is found only in prokaryotes and consists of structural genes and a promoter and operator. Which of the following statements explains why we study the lac operon?
If there is an insertion mutation in the operator of the lac operon, the expression of the lac structural gene will be __________
A and B jointly owe Rs. one lac to C. A alone pays the whole amount to C. B not knowing the fact of payment by A pays Rs. one lac over again to C. Is C bound to repay Rs. one lac to B.
A Lac repressor is a tetramer repressed when bound to the inducer. The trp repressor is a ____________________
Once an operon structure is known ______ for the presence of a promoter and regulatory elements _____ in the operon do not possess such DNA elements.