The answer is cell wall!!!XD
Hope this helped!!!XD
The virus that infect bacteria are called bacteriophage ! Hope this helps! :)
Transcription of the operon by RNA polymerase would not stop. This would, therefore, keep the genes in the operon
activated without repression. β-galactosidase, lactose permease, and lactose transacetylase enzymes would still
be produced by the bacteria even in a non-lactose medium.