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Question
Which one of the following is not a part of lac operon?
Options
Promoter
Regulator
Inducer
Operator
Solution
Inducer
Explanation:
Lac operon consists of the following components:
- Regulator gene (repressor gene)
- Promoter gene
- Operator gene
- Structural genes
- Inducer: It is not a component of an operon.
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RELATED QUESTIONS
Give one significant contribution to the following scientists:
G. Gamow
Multiple Choice Question:
Which out of the following is not an example of an inducible operon?
Explain the role of Lactose as an inducer in Lac-operon.
Give diagrammatic representation of Lac-operon in the presence of inducer.
Identify the INCORRECT statement/s.
- Regulation of lac operon by repressor is referred to as negative regulation.
- The repressor protein produced by regulator gene binds to the operator region.
- The sequence constituting the operator region is present upstream of promoter region
- Each operon bas a specific 'Operator'.
Which of the following is TRUE with reference to Operon?
E. coli cells with a mutated Z gene of the lac operon cannot grow in medium containing only lactose as the source of energy because ______.
Assertion (A): Regulation of lac operon by a repressor is referred to as negative regulation.
Reason (R): Lac operon is under the control of positive regulation as well.
What is the role of a repressor gene?
Which molecule does act as inducer molecule in lac operon?
