In the given figure of the lac operon,an for inducible enzymes, Identify components and enzymes

Answer

D

Explanation

X = Repressor protein, in molecular genetics, a repressor is a DNA- or RNA-binding protein that inhibits the expression of one or more genes by binding to the operator or associated silencers.
Y= Inducer is a molecule that regulates gene expression.
E1 = Galactosidase, catalyzes the hydrolysis of βgalactosides into monosaccharides through the breaking of a glycosidic bond.
E2 = Permease, facilitate the diffusion of a specific molecule in or out of the cell by passive transport.
E3 = Transacetylase, is an enzyme that transfers an acetyl group from acetyl-CoA to `beta`-galactosides