First slide

Regulation of Gene Expression

Question

The main function of the enzyme permease in lac operon is:

Easy

A

Breakdown of lactose into its monomeric units
B

Increasing permeability of the cell to β-galactosides
C

Synthesis of repressor proteins
D

Detoxification of the cell

Solution

The lac y codes for the enzyme permease and it increases permeability of the cell to β-galactosides by facilitated diffusion.

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