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 \[\beta \]- galactosidase
Correct Answer: D
Solution :
Lac operon is a cluster of genes encoding three proteins that bacteria use to obtain energy from the sugar lactose. There are three structural genes in lac operon.You need to login to perform this action.
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