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In an E coli cell according to the opero...

In an E coli cell according to the operon theory, an operator gene combines with

A

inducer gene to 'switch on' structural gene transcription

B

regulator gene to 'switch off' structural gene transcription

C

regulator protein to 'switch off' structural gene transcription

D

regulator protein to 'switch off' structural gene transcription

Text Solution

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The correct Answer is:
C
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ARIHANT NEET-GENE, ITS EXPRESSION AND REGULATION-Chapter Exercise (A) Taking it together (Assorted questions of the Chapter for Advanced Level Practice
  1. The promoter site and the terminator site for transcription are locate...

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  2. The wild type E. coli cells are growing in normal medium with glucose....

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  3. In an E coli cell according to the operon theory, an operator gene com...

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  4. The lac operon requires a ' helper' protein which, by binding to the p...

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  5. Which one of the following pairs is correctly matched?

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  6. During protein synthesis , the correct amino acid is brought to the ri...

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  7. Addition of lactose in a culture of E. coli induces enzymes ----------...

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  8. Practice using the dictionary of the genetic code determine the amino ...

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  9. During protein synthesis , the correct amino acid is brought to the ri...

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  10. Which among the following codon do not codes for valine (val)?

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  11. The process of translation requires

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  12. Which of the following is true about the terminator

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  13. Which of the following is true about the promoter gene?

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  14. In protein synthesis, a polypeptide of five amino acids is synthesized...

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  15. In mRNA , AUG is the initiating codons and UAA, UAG and UGA are termin...

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  16. In tryptophan synthesis pathway , tryptophan acts as a compressor . Wh...

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

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  18. Which of the following is true for RNA processing?

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  19. A DNA molecule in which both strands have radioactive thymidine is all...

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  20. A bacteria containing 100% N^(15) nitrogen bases is allowed to replica...

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