The lactose present in the growth medium of bacteria is transported to the cell by the action of:
Acetylase
Permease
Polymerase
Beta-galactosidase
the y gene of the lac operon codes for permease, which increases the permeability of the cell to -galactosides (lactose), allowing it to be transported into the cell. The z gene codes for beta-galactosidase (hydrolysis of lactose), and the a gene encodes a transacetylase.
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