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In E.coli during lactose metabolism, rep...

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

A

operator gene

B

promoter gene

C

regulator gene

D

structural gene

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The correct Answer is:
A
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In Lac-operon, repressor protein binds to

E coli. is:

Select the two correct statements out of the four (1-4) given below about lac operon. 1. Glucose or galactose may bind with the repressor and inactivate it 2. In the absence of lactose the repressor binds with the operator region 3. The z-gene codes for permease 4. This was elucidated Francois Jacob and Jacque Monod The correct statements are :

In an E. coli culture lactose is used as food instead of glucose. If so, answer the following questions: (1) How do the bacteria respond to the above situation at genetic level? (2) If lactose is removed from the medium what will happen?

In E.coli replication starts at :

Give the names and functions of enzymes involved in lactose metabolism in E. Coli:

Jacob and Monod studied lactose metabolism in E. coli and proposed operon concept which is applicable for all :

GRB PUBLICATION-GENE EXPRESSION AND REGULATION-NCERT Corner(Exemplar Problems)
  1. In E.coli during lactose metabolism, repressor binds to :

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  2. In a DNA strand the nucleotides are linked together by

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  3. A nucleoside differs from a nucleotide. It lacks the

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  4. Both deoxyribose and ribose belong to a class of sugars called

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  5. the fact that a purine base always pairs through hydrogen bonds with a...

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  6. The net electric charge on DNA and histones is

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  7. The promoter site and the terminator site for transciption are located...

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  8. Which of the following statements is the most appropriate for sickle c...

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  9. One of the following is true with respect to AUG

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  10. The first genetic material could be

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  11. With regard to mature mRNA in eukaryotes

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  12. The human chromosome with the highest and least number of gens in the...

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  13. Who amongst the following scientists had no contribution in the deve...

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  14. DNA is a polymer of nucleotides which are linked to each other by 3'-5...

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  15. Discontinuous synthesis of DNA occurs in one strand, because

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  16. Which of the following steps in transcription is catalysed by RNA poly...

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  17. Control of gene experssion takes place at the level of

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  18. Regulatory proteins are the accessory proteins that interact with RNA ...

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  19. Which was the last human chromosome to be completely sequenced ?

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  20. Which of the following are the functions of RNA

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  21. While analysing the DNA of an organism a total number of 5386 nucleoti...

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