E.coli cells with a mutated $Z$ gene of the lac operon cannot grow in medium containing only lactose as the source energy because
E.coli cells with a mutated $Z$ gene of the lac operon cannot grow in medium containing only lactose as the source energy because
- [AIPMT 2005]
- A
In the presence of glucose, E.coli cells do not utilize lactose
- B
They cannot transport lactose from the medium into the cell
- C
The lac operon is constitutively active in these cells
- D
They cannot synthesize functional betagalactosidase
Similar Questions
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 :
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 :
- [NEET 2022]
Repressor protein is formed from
Repressor protein is formed from
In lac operon system lac gene -$I $ codes for
In lac operon system lac gene -$I $ codes for
The regulatory genes are located
The regulatory genes are located
Write short note on lac operon
Write short note on lac operon