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प्रश्न
In E.coli, the lac operon gets switched on when ______.
विकल्प
lactose is present and it binds to the repressor.
repressor binds to operator.
RNA polymerase binds to the operator.
lactose is present and it binds to RNA polymerase.
उत्तर
In E.coli, the lac operon gets switched on when lactose is present and it binds to the repressor.
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संबंधित प्रश्न
Study the schematic representation of the genes involved in the lac operon given below and answer the questions that follow :
| p | i | p | o | z | y | a |
(a) Identify and name the regulatory gene in this operon. Explain its role in 'switching off' the operon.
(b) Why is the lac operon's regulation referred to as negative regulation?
(c) Name the inducer molecule and the products of the genes 'z' and 'y' of the operon. Write the functions of these gene products.
Short Answer Question:
Explain the role of lactose in ‘Lac Operon’.
Select the WRONG statement from the following with reference to lac operon.
Lactose operon produces enzymes ______.
In Escherichia coli lac Operon is induced by ______.
In lac operon, lactose is the substrate for enzyme beta-galactocidase and its regulates ______.
Which of the following is required as an inducer(s) for the expression of lac operon?
Select the correct pair.
In which condition, lac operon is switched off?
Which one of the following is not a part of lac operon?
