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Number of structural genes in tryptophan...

Number of structural genes in tryptophan operon is

A

3

B

4

C

5

D

6

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Verified by Experts

The correct Answer is:
C
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The sequence of structural genes in lac operon is

Sequence of structural genes of lac operon is

The lac operon consists of a regulation gene and three structural gene. The lactose acts as inducer. In the presence of an Inducer such as lactose, the repressor is in inactivated during the interaction. This allows RNA polymerase access to the promoter and transcription proceeds. The repressor is synthesized which in turn binds with the operator region of the operon and prevents RNA polymerase from transcribing the operon. Identify the correct sequence of the structural genes in the lac operon.

How many structural genes are present in the tryptophan operon of Escherichia coli ?

How are the structural genes activated in the lac operon in E. coli ?

Lysine and tryptophan are

How are the structural genes inactivated in lac operon in E. Coli? Explain.

(a) Explain the role of regulatory gene, operator and structural genes in lac operon when E. Coli is growing in a culture medium with the sources of energy as lactose.

Enlist the genes in Lac operon

A polycistronic structural gene of lac operon is regulated by

AAKASH INSTITUTE-MOCK TEST 35-EXAMPLE
  1. The structural gene that codes for transacetylase enzyme which can tra...

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  2. Regulation of lac operon by repressor is called

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  3. Number of structural genes in tryptophan operon is

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  4. The predominant-site for control of gene expression in prokaryotes is

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  5. Number of base pairs in human chromosomes

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  6. The number of genes found in chromosome 1 and Y-chromosome fo human be...

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  7. What percentage of human genome codes for proteins?

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  8. Which of the following DNA segments have 1-6 bp length?

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  9. Select the incorrect statement(s) w.r.t regulator gene of lac operon, ...

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  10. All of the following form the basis of DNA fingerprinting, except

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  11. Which of the following techniques is used for separation of DNA fragme...

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  12. Which of the following methods is involved in identifying all genes th...

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  13. Which of the following is a non-infectious disease?

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  14. Find the Incorrect match between disease and its vector.

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  15. Which of the following organism affect the lymphatic vessels in human ...

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  18. Choose the correct wrt. Plasmodium

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  19. Infective stage of Plasmodium for human is

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  20. Infective stage of Plasmodium after entering in human blood first migr...

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