Question

fill in the blank question

lactose acts as an in the lactose operon.

Explanation:

Identify the role of lactose in the lac operon

Lactose (specifically its isomer allolactose) binds to the lac repressor protein, preventing it from binding to the operator, which allows transcription of the operon to proceed. Therefore, lactose acts as an inducer.

Answer:

Lactose acts as an <blank>inducer</blank> in the lactose operon.