Explain how the addition of lactose in the medium regulates the switching on of the lac operon in bacteria.

Question

TextLac Operon Model of Gene RegulationCBSE PYQ

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Explain with the help of well-labelled diagrams how lac operon operates in E. coli : (i) In presence of an inducer. (ii) In absence of an inducer.

Explain the components of the structural genes in the Lac operon system in E. coli. How does the operon function in the presence of lactose?

Regulation of lac operon by repressor is referred to as :

Which enzyme(s) will be produced in a bacterial cell in which 'UAG' is inserted in the 'lac-y gene' due to mutation ? Choose the correct option :