E coli cells with a mutant z gene of the lac operon cannot grow in medium containing only lactose asthe source of energy because (AIPMT - 2005)

Question

TuteeHUB · Accepted Answer

NA

TuteeHUB · Answer

the lac operon is constitutively active in these cells

TuteeHUB · Answer

they cannot synthesize functional beta galactosidase

TuteeHUB · Answer

in the presence of glucose E Coli cell do not utilize lactose

TuteeHUB · Answer

they cannot transport lactose from the medium into the cell

1.	E coli cells with a mutant z gene of the lac operon cannot grow in medium containing only lactose asthe source of energy because (AIPMT - 2005)
A.	the lac operon is constitutively active in these cells
B.	they cannot synthesize functional beta galactosidase
C.	in the presence of glucose E Coli cell do not utilize lactose
D.	they cannot transport lactose from the medium into the cell
Answer» C.

Discussion