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Regulatory proteins are the accessory pr...

Regulatory proteins are the accessory proteins that interact with RNA polymerase and affect its role in transcription . Which of the following statements correct about regulatory protein ?

A

They only increase expression

B

They only decrease expression

C

They interact with RNA polymerase but do not affect the expression

D

They can act both as activators and as repressors

Text Solution

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The correct Answer is:
B
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USHA PUBLICATION-MOLECULAR BASIS OF INHERITANCE-EXERCISE
  1. Which of the following steps in transcription is catalysed by RNA poly...

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  2. The polymerase that has 5'-3' exonuclease property is known as ..........

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

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  4. Which was the last human chromosome to be completely sequenced :

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  5. Which of the following are the functions of RNA ?

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

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  7. In some viruses , DNA is synthesised by using RNA as template . Such a...

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  8. If Meselson and Stahl's experiment is continued for four generations i...

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  9. If the sequence of nitrogen bases of the coding strand of DNA in a tra...

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  10. The RNA polymerase holoenzyme transcribes :

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  11. If the base sequence of a codon in mRNA is 5' - AUG 3' , the sequence ...

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  12. The amino acid attaches to the tRNA at its :

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

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

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

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

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

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

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

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

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