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Class 12 Biology Practice Test: Molecular Basis of Inheritance - Lac Operon
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Class 12 Biology Practice Test: Molecular Basis of Inheritance - Lac Operon
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6 Questions

1. How many structural genes are present in a lac operon?
2. Which of the following is responsible for the switching on and off of the lac operon?
3. What does the structural gene (y) of a lac operon code for?
4. Which of the following is the necessary condition for the entry of lactose into the cell?
5. Which polycistronic structural gene is regulated by a common promoter and regulatory gene?
6. What is the regulation of a lac operon by a repressor known as?

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