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In E. coli , the lac operon gets switche...

In E. coli , the lac operon gets switched on when :

A

Lactose is present and it binds to the repressor

B

Repressor binds to operator

C

RNA polymerase binds to the operator

D

Lactose is present and it binds to RNA polymerase

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The correct Answer is:
A
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USHA PUBLICATION-MOLECULAR BASIS OF INHERITANCE-EXERCISE
  1. The amino acid attaches to the tRNA at its :

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  2. To initiate translation , the mRNA first binds to :

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  3. In E. coli , the lac operon gets switched on when :

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  4. Fill In The blank : Protein synthesis is translation of ………………..

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  5. Fill In The blank : Information in DNA in the nucleus is transferred t...

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  6. Fill In The blank : A sequence of three nucleotides in DNA corresponds...

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  7. Fill In The blank : The synthesis of RNA on DNA template is called ………...

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  8. Fill In The blank : Transcription begins when ………………. binds to a promo...

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  9. Fill In The blank : Elongation of RNA polynucleotide chain always take...

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  10. Fill In The blank : Termination signals on DNA template during formati...

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  11. Fill In The blank : Each codon on mRNA consiste of …………………

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  12. Fill In The blank : Activation of amino acids during protein synthesis...

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  13. Fill In The blank : Aminoacyl synthetase enzyme take part in ………………….

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  14. Fill In The blank : Peptidyl and aminoacyl sites are associated with …...

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  15. Fill In The blank : The first tRNA that is brought to the initiating c...

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  16. Fill In The blank : ……………….. codons are not recognised by any aminoacy...

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  17. Fill In The blank : The major function of mRNA is to …………………..

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  18. Fill In The blank : In protein synthesis , the codon used as a start s...

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  19. Distinguish between: DNA and RNA

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  20. Distinguish between:Repetitive DNA and satellite DNA

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