The lac operon is an example of a:
Show answer and explanation
Correct answer: Inducible operon system
The lac operon is an inducible system: it is normally repressed by the lac repressor and switched on only when lactose (converted to allolactose) is present. This allows the bacterium to express the lactose-metabolizing enzymes only when the substrate is available.
Practice all 20 Gene Regulation: Operons and Epigenetics questions
Keep practicing
More Gene Regulation: Operons and Epigenetics questions
- In the lac operon, the operator functions as a:
- Which molecule acts as the inducer of the lac operon?
- The trp operon is classified as a:
- In the trp operon, high levels of tryptophan result in:
- Which component of an operon contains the coding sequences for enzymes?
- Catabolite repression in the lac operon is mediated by: