Which enzyme / enzymes are responsible for transformation of lactose to galactos in the E.coli culture medium.
Match List $-I$ with List $-II$ :
List $-I$ | List $-II$ |
$a$ In lac operon $i$ gene codes for | $i$ transacetylase |
$b$ In lac operon $z$ gene codes for | $ii$ permease |
$c$ In lac operon $y$ gene codes for | $iii$ $\beta$ - galactosidase |
$d$ In lac operon $a$ gene codes for | $iv$ Repressor |
Choose the correct answer from the options given below :
In lac operon, $z$ gene codes for:
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?