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Read the following and answer the question given below:
The lac operon consists of a regulation gene and three structural genes. The lactose acts as an inducer. In the presence of an Inducer such as lactose, the repressor is inactivated during the interaction. This allows RNA polymerase access to the promoter and transcription proceeds. The repressor is synthesized which in turn binds with the operator region of the operon and prevents RNA polymerase from transcribing the operon.
When the process of Lac operon is blocked by a repressor it represents :
  • a)
    Positive regulation
  • b)
    Negative regulation
  • c)
    sometimes positive sometimes negative
  • d)
    both positive and negative regulation
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Read the following and answer the question given below:The lac operon...
The lac operon regulation can be in both negative and positive ways. It is a negative control system because expression is typically blocked by an active repressor (the lac repressor) that turns off transcription. And when CAP (catabolite gene activating protein) binds upstream of this operator region near the promoter and transcription increases, this is an example of a positive system.
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Read the following and answer the question given below:The lac operon consists of a regulation gene and three structural genes. The lactose acts as an inducer. In the presence of an Inducer such as lactose, the repressor is inactivated during the interaction. This allows RNA polymerase access to the promoter and transcription proceeds. The repressor is synthesized which in turn binds with the operator region of the operon and prevents RNA polymerase from transcribing the operon.When the process of Lac operon is blocked by a repressor it represents :a)Positive regulationb)Negative regulationc)sometimes positive sometimes negatived)both positive and negative regulationCorrect answer is option 'B'. Can you explain this answer?
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Read the following and answer the question given below:The lac operon consists of a regulation gene and three structural genes. The lactose acts as an inducer. In the presence of an Inducer such as lactose, the repressor is inactivated during the interaction. This allows RNA polymerase access to the promoter and transcription proceeds. The repressor is synthesized which in turn binds with the operator region of the operon and prevents RNA polymerase from transcribing the operon.When the process of Lac operon is blocked by a repressor it represents :a)Positive regulationb)Negative regulationc)sometimes positive sometimes negatived)both positive and negative regulationCorrect answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Read the following and answer the question given below:The lac operon consists of a regulation gene and three structural genes. The lactose acts as an inducer. In the presence of an Inducer such as lactose, the repressor is inactivated during the interaction. This allows RNA polymerase access to the promoter and transcription proceeds. The repressor is synthesized which in turn binds with the operator region of the operon and prevents RNA polymerase from transcribing the operon.When the process of Lac operon is blocked by a repressor it represents :a)Positive regulationb)Negative regulationc)sometimes positive sometimes negatived)both positive and negative regulationCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Read the following and answer the question given below:The lac operon consists of a regulation gene and three structural genes. The lactose acts as an inducer. In the presence of an Inducer such as lactose, the repressor is inactivated during the interaction. This allows RNA polymerase access to the promoter and transcription proceeds. The repressor is synthesized which in turn binds with the operator region of the operon and prevents RNA polymerase from transcribing the operon.When the process of Lac operon is blocked by a repressor it represents :a)Positive regulationb)Negative regulationc)sometimes positive sometimes negatived)both positive and negative regulationCorrect answer is option 'B'. Can you explain this answer?.
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