Home
Class 12
BIOLOGY
Lac operon is...

Lac operon is

A

Repressible operon

B

Overlapping genes

C

Arbainose operon

D

Inducible operon

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • MOLECULAR BASIS OF INHERITANCE

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (SECTION -D) (Assertion -Reason Type Questions)|20 Videos

  • MOLECULAR BASIS OF INHERITANCE

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (SECTION -B) Objective Type Questions|36 Videos

  • MOCK_TEST_20

    AAKASH INSTITUTE ENGLISH|Exercise EXAMPLE|31 Videos

  • MORPHOLOGY OF FLOWERING PLANTS

    AAKASH INSTITUTE ENGLISH|Exercise TRY YOURSELF|38 Videos

Similar Questions

Explore conceptually related problems

Assertion :- Lactose is the substrate for the enzyme beta -galactosidase & it regulates switching on & off of the operon. Reason: A very low level of expression of lac operon is always present in cell all the time.

The inducer of Lac operon binds to

In Lac operon this lies upstream to the operator region

In the Lac operon system, Beta-galactosidase is coded by

Assertion :- In lac operon, in the presence of inducer RNA polymerase access to the promotor and transcription proceeds. Reason:- In lac operon in the presence of inducer repressor protein is inactivated

Which of following statement is true for lac operon in E-coli (a) lac operon consists of one regulatory gene and five structural gene. (b) The i gene codes for inducer (c) The z-gene codes for beta -galacosidase (d) A very low level of expression of lac operon has to be present in cell all the time

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

Give a labelled schematic representation of "lac operon" in its "Switched off" position.

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

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

AAKASH INSTITUTE ENGLISH-MOLECULAR BASIS OF INHERITANCE -ASSIGNMENT (SECTION -C) Previous Years Questions
  1. An environmental agent that triggers transcription from an operon is a...

    Text Solution

    |

  2. In slpit genes, the coding sequences are called

    Text Solution

    |

  3. Lac operon is

    Text Solution

    |

  4. If the DNA condons are ATG ATG ATG and a cytosine base is inserted at...

    Text Solution

    |

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

    Text Solution

    |

  6. If the sequences of bases in DNA is ATTCGATG, then the sequence of bas...

    Text Solution

    |

  7. Which of the following serves as an stop codon ?

    Text Solution

    |

  8. The codons causing chain termination (stop codons) are

    Text Solution

    |

  9. DNA synthesis can be specifically measured by estimating the incorpora...

    Text Solution

    |

  10. Which step of translation does not consume high energy PO(4) bond?

    Text Solution

    |

  11. DNA parts can switch their positions are

    Text Solution

    |

  12. Sequence of which of the following is used to know the phylogeny : -

    Text Solution

    |

  13. Genes that are involved in turning on or off the transcription of a se...

    Text Solution

    |

  14. In operon concept, regulator gene functions as:

    Text Solution

    |

  15. In DNA when AGCT occurs , their association is as per which of the fol...

    Text Solution

    |

  16. Irregularity is found drosophila during the organ differentiation for ...

    Text Solution

    |

  17. Method of DNA replication in which two strands of DNA separates and sy...

    Text Solution

    |

  18. In Negative operon : -

    Text Solution

    |

  19. Gene and cistron words are sometimes used synonymously because

    Text Solution

    |

  20. m-RNA is synthesised on DNA template in which direction : -

    Text Solution

    |