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Which of the following is required as in...

Which of the following is required as inducer(s) for the expression of Lac operon

A

galactose

B

lactose

C

lactose and galactose

D

glucose

Text Solution

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The correct Answer is:
B
Lac operon is an inducible operon . Lactose is the substrate for the enzyme `beta` - galactosidase and it also regulates switching on and off of the opern . Hence, it is termed as inducer.
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NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-MOLECULAR BASIS OF INHERITANCE-EXERCISE
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  2. Which of the following is not required for any of the techniques of DN...

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  3. Which of the following is required as inducer(s) for the expression of...

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  5. A molecule that can act as a genetic material must fulfill the traits ...

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  6. Which of the following r-RNAs acts as structural RNA as well as riboso...

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  7. One functional unit of gene which specifies synthesis of one polypepti...

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  8. Taylor conducted the experiment to prove semiconservative mode of chro...

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  9. which one of the following is not applicable to RNA

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  10. Identify the correct order of organisation of genetic material from...

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  11. Satellite DNA is important because it

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  12. Which one of the following is wrongly matched ?

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  13. Transformation was discovered by

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  14. The diagram shows an important concept in the genetic implicatio of D...

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  15. Which enzyme/s will be produced in a cell in which there is a nonsese ...

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  16. Removal of RNA polymerase III from nucleoplasm will affect the synthes...

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  17. Which one of the following is not a part of trasncription unit in DNA

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  18. Ribosomal RNA is synthesised in

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  19. If one strand of DNA has the nitrogenous base sequence as ATCTG, what ...

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  20. Removal of introns and joining of exons in a defined order during tran...

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