1) Lac operon is present in a) Humans b) Monkey c) Bacteria 2) Which is not a part of lac operon? a) RNA Polymerase b) Promotor c) Operator 3) Which one is the regulatory gene? a) Lac z b) Lac i c) Lac a 4) Lac z, lac y, lac a encodes for ______, _______, _________ respectively. a) Permease, beta galactosidase, transacytelase b) Transacytelase, permease, beta galactosidase c) Beta galactosidase, permease, transacytelase 5) Where does inhibitor binds? a) Promotor b) Lac z gene c) Operator

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