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Which of the following is produced by E-...

Which of the following is produced by E-Coli in the lactose operon.

A

`beta` galactosidase

B

Thiogalactoside transacetylase

C

Lactose dehydrogenase

D

Lactose permease

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The correct Answer is:
C
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This is not produced by E.coli in the lactose medium :

Which of the following events would occur in 'Lac' operon' of E. coli when the growth medium has high concentration of lactose ?

The lac operon consists of a regulation gene and three structural gene. The lactose acts as inducer. In the presence of an Inducer such as lactose, the repressor is in 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. Which of the following statement is true in reference to the lac operon process in E.coli? (i) Galactosidase is the only enzyme produced in large quantities when lac operon is turned on (ii) The messenger RNA in lac operon is a polycistronic mRNA

Which of the following events would occur in 'Lac-operon of E. coil when growth medium has high concentration of lactose ?

Which of the following does not differ in E.coli and Chlamudomonas ?

Which one of the following does not differ in E.coli and chlamydomonas?

Which one of the following does not differ in E.coli and Chlamydomonas?

MOTION-MOLECULAR BASIS OF INHERITANCE-EXERCISE - 1
  1. Which is true for repressible operon :-

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  2. What does ''lac'' refer to in what we call the lac operon ?

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  3. Which of the following is produced by E-Coli in the lactose operon.

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  4. A functional complex comprising a cluster of genes including structura...

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  5. Functioning of structural gene is controlled by:

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  6. Who explained the operon model the first time

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  7. The accessibility of promote regions of prokaryotic DNA by RNA polymer...

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  8. Regulation of lac operon by repressor is referred to as -

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  9. Which is incorrect

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  10. Which is the primary step for regulation of gene expression.

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  11. The sequence of structural genes in lac operon is

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  12. DNA finger printing was invented by :-

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  13. Which one of the following pairs of terms/names mean one and the same ...

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  14. What is the first step in the Southern Blot technique

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  15. Which step does not involve in DNA finger printing

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  16. The technique of transferring DNA fargment separated on agarose gel to...

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  17. Western blotting is used for the identification of :-

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  18. Which of the following techniques are used in analyzing restrication f...

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  19. The approximate number of genes contained in the genome of Kalpana Cha...

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  20. The total number of nitrogenous bases in human genome is estimated to ...

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