Protein Synthesis
The lac operon contains the z, y and a structural genes

None of these
encoding p-galactosidase, galactose permeases and thio-galactosidase transacetylase respectively
encoding P-galactosidase only
encoding p-galactosidase and galactose permeases

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Protein Synthesis
Translation in prokaryotes begins by the formation of a 30S initiation complex between the

30S ribosomal subunit, mRNA and initiation factors
30S ribosomal subunit and mRNA only
30S ribosomal subunit, mRNA, initiation factors and N-fMet tRNA
30S ribosomal subunit, tRNA and initiation factors

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