Which enzyme / enzymes are responsible for transformation of lactose to galactos in the E.coli culture medium.
$B$ -galactosidase
Permease
Transacetylase
All above
Repressor protein is formed from
In the medium where $E$. coli was growing, lactose was added, which induced the lac operon. Then, why does lac operon shut down some time after addition of lactose in the medium?
$A$ : Single $DNA$ dependent $RNA$ polymerase catalyses transcription of all types of $RNA$ in all except bacteria.
$R$ : Structural genes in bacteria are monocistronic.
In lac operon, $z$ gene codes for:
It is the expression of y gene in lac-operon