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Question
A unit of lac-operon which in the absence of lactose, suppresses the activity of operator gene is
Options
Structural gene
Regulatory gene
Repressor protein
Promoter gene
Solution
Regulatory gene
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RELATED QUESTIONS
Multiple Choice Question:
Which out of the following is not an example of an inducible operon?
In lac operon, lactose acts as:
What is meant by an operon?
Give diagrammatic representation of Lac-operon in the presence of inducer.
Which of the following is NOT the part of an operon?
______ refers to the chemical molecule present in the cytoplasm that inactivates the repressor.
Which of the following is TRUE with reference to Operon?
Define an operon. giving an example, explain an Inducible operon.
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) The active site of enzyme permease present in the cell membrane of a bacterium has been blocked by an inhibitor, how will it affect the lac operon?
(b) The protein produced by the i gene has become abnormal due to unknown reasons. Explain its impact on lactose metabolism stating the reason.
(c) If the nutrient medium for the bacteria contains only galactose; will operon be expressed? Justify your answer.
Select the correct pair.
