In Operon concept, the regulator gene regulates chemical reactions in the cell by

  • [AIIMS 1985]
  • A

    Inactivating enzymes in the reaction

  • B

    Inhibiting transcription of $mRNA$

  • C

    Inhibiting migration of $mRNA$ into cytoplasm

  • D

    Inhibiting the substrate in the reaction

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Which enzyme / enzymes are responsible for transformation of lactose to galactos in the E.coli culture medium.

Definitions/Explanation : A promoter & The structural gene
 

Lactose operon produces enzymes

Which of the following is required as inducer(s) for the expression of Lac operon?

  • [NEET 2016]