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In trp operon, the corepressor is...

In trp operon, the corepressor is

A

tryptophan

B

lactose

C

B-galactoside

D

glucose

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The correct Answer is:
A
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You have created a fusion between trp operon and lac operon which encodes the enzymes for tryptophan biosynthesis, under the regulatory control of the lac operator. Under which of the following conditions will tryptophan synthase be induced in the strain that carries the chimeric operator fused operons ?

Lac operon is

ARIHANT NEET-GENE, ITS EXPRESSION AND REGULATION-Chapter Exercise (A) Taking it together (Assorted questions of the Chapter for Advanced Level Practice
  1. The transcription of cluster of genes coding for protein is controlled...

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  2. The example of inducible operon is

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  3. In trp operon, the corepressor is

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  4. How many nucleotides are found in one spiral of B-DNA?

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  5. When mRNA is synthesised on DNA, the unwanted DNA regions are removed ...

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  6. Because most of the amino acids are represented by more than one codon...

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  7. Gene controls

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  8. The sequences of nucleotides in yeast, a little away from the starting...

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  9. Aporepressor is inactive repressor in Tryptophan repressible operon sy...

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  10. During protein synthesis, a ribosome moves from 5' to 3' end of mRNA t...

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  11. The operator gene of lac operon is ' turned on ' when lactose molecule...

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  12. During transcriptions, the RNA that forms from DNA is

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  13. Name the RNA type which helps in the processing of rRNA in the nucleus

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  14. The DNA strand that has the polarity 3'-5' and acts as a template, is ...

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  15. Process of codon recognition occur during

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  16. The ribosome acts as a catalyst for the formation of

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  17. For initiation of translation, the ribosome first binds to

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

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  19. mRNA is also known as

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  20. The bond present between the sugar and phosphate group of DNA is

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