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In Lac-operon, repressor protein binds t...

In Lac-operon, repressor protein binds to

A

Regulator gene

B

Operator gene

C

Promoter gene

D

Structural gene

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The correct Answer is:
B
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Lac operon is

Read the statements regarding the lac operon and choose the correct option. 1. An inducer regulates the switching on and off of lac operon. 2. Repressor protein dissociates from operator region and prevents RNA polymerase from transcribing the operon. 3. In the presence of lactose, the repressor is activated by interaction with lactose. 4. RNA polymerase has access to the promoter and transcription proceeds only when the repressor is inactivated.

Repressor protein is produced by :

In the operon system, the repressor protein can bind only to the :

In Tryptophan operon corepressor binds with

In lac-operon , which protein is not regulated by the repressor?

A gene of operon which forms the repressor protein is

In E.coli during lactose metabolism, repressor binds to :

The Lac Operon

A2Z-MOLECULAR BASIS OF INHERITANCE-Section A: Topicwise Questions (topic 7: Regulation Of Gene Expression) The Lac Operon
  1. Recognise the figure and find out the correct matching.

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  2. The lac operon is turned on when allolactose molecules bind to

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  3. An environmental agent that triggers transcription from an operon is a...

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  4. The genes are responsible for growth and differentiation in an organis...

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  5. In operon model, regulator gene functions as

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  6. Operon contains

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  7. In Escherichia coli, the product of i gene combines with

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  8. Operon is

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  9. Escherichia coli with mutated z gene of lac operon cannot grow in medi...

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  10. Match the column and choose the correct option.

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  11. Lac operon concept was proposed by

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  12. Escherichia coli growing on medium having glucose is transferred to la...

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  13. In Lac-operon, repressor protein binds to

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  14. A gene of operon which forms the repressor protein is

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  15. Operon model of gene regulation and organisation of prokaryotes was pr...

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  16. Sequence of structural genes of lac operon is

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  17. What is correct gene expression pathway ?

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  18. Lac operon 'inducer lactose' serves as an anzyme substrate for anzyme

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  19. In lac operon model, lactose functions as

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  20. In lac operon genes a, i, y and z code for

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