Direction: An E. coli cell of volume 10–12 cm³ contains 60 molecules of lac repressor. The repressor has a binding affinity (Kd) of 10–8 M and 10–9 M with and without lactose respectively, in the medium.
-
Therefore the lac-operon is
-
- repressed and can only be induced with lactose.
- repressed and cannot be induced with lactose.
- not repressed.
- expressed only when glucose and lactose are present.
Correct Option: B
NA
