Home
Class 12
BIOLOGY
Select the two correct statements out of...

Select the two correct statements out of the four given below about lac operon.
(i) Glucose or galactose may bind with the repressor and inactivate it.
(ii) In the absence of lactose the repressor binds with the operator region
(iii) The z-gene codes for permease
(iv) This was elucidated by Francois jacob and Jacque monod are:

A

(a) and (b)

B

(b) and (c)

C

(a) and (c)

D

(b) and (d)

Text Solution

Verified by Experts

The correct Answer is:
D
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

Select the two correct statements out of the four (1-4) given below about lac operon. 1. Glucose or galactose may bind with the repressor and inactivate it 2. In the absence of lactose the repressor binds with the operator region 3. The z-gene codes for permease 4. This was elucidated Francois Jacob and Jacque Monod The correct statements are :

Study the figure given below and answer the questions: (i) How does the repressor molecule get inactivated? (ii) When does the transcription of lac mRNA stop? (iii) Name the enzyme transcribed by the gene Z'.

Consider the following four statements (i-iv) regarding kidney transplant and select the two correct ones out of these (i) Even if a kidney transplant is proper the recipient may need to take immuno-suppressants for a long time (ii) The cell-mediated immune response is responsible for the graft rejection (iii) The B-lumphocytes are responsible for rejection of the graft (iv) The acceptance or rejection of a kidney transplant depends on specific interferons The correct statements are

Consider the following four statements (i-iv) regarding kidney transplant and select the two correct ones out of these (i) Even if a kidney transplant is proper the recipient may need to take immuno-suppressants for a long time (ii) The cell-mediated immune response is responsible for the graft rejection (iii) The B-lumphocytes are responsible for rejection of the graft (iv) The acceptance or rejection of a kidney transplant depends on specific interferons The correct statements are

Consider the following four statements (I-IV) regarding kidney transplant and select the two correct ones out of these. I. Even if a kidney transplant is proper the recipient may need to take immuno-suppresants for a long time. II. The cell-mediated immune response is responsible for the graft rejection. III. The B-lymphocytes are responsible for rejection of the graft. IV. The acceptance or rejection of a kidney transplant depends on specific interferons. The two correct statements are

Read the following statements about menstrual cycle and select two correct statements: (i). Lack of menstruation may be indicative of pregnance (ii). The changews in the ovary and the uterus are induced by changes in the lveles of ovarian hormones only (iii). LH suge induces ovulation (iv). If fertilisation occurs, corpus luteum degenerates immediately

Read the following statements about menstrual cycle and select two correct statements. (i) Lack of menstruation may be indicative of pregnancy. (ii) The changes in the ovary and the uterus are induced by changes in the levels of ovarian hormones only. (iii) LH surge induces ovulation. (iv) If fertilization occurs, corpus luteum degenerates immediately

Read the following statements for lac operon: i. Each operon has its specific operator and specific repressor. ii. The y gene codes permease, which increases the permeability of the cell to beta-galactosides. iii. Regulation of lac operon can be visualized as regulation of enzyme synthesis by its substrate. Select the option with the correct statements.

Study the four statement (i-iv) given below and select the two correct ones out of them (i) A lion eating a deer and a sparrow feeding or grains are ecologically similar in being consumers. (ii) Predator star fish Pisaster helps in maintaining species diversity of some invertebrates (iii) Predators ultimately lead to the extinction of prey species (iv) Production of chemicals such as nicotine, strychnine by the plants are metabolic disorders The two correct statements are

AAKASH INSTITUTE ENGLISH-MOLECULAR BASIS OF INHERITANCE -ASSIGNMENT (SECTION -C) Previous Years Questions
  1. The unequivocal proof of DNA as the genetic material caome from the st...

    Text Solution

    |

  2. Which one of the following does not follow the central dogma of molecu...

    Text Solution

    |

  3. Select the two correct statements out of the four given below about la...

    Text Solution

    |

  4. The one aspect which is not a salient feature of genetic code, it its ...

    Text Solution

    |

  5. In eukaryotic cell transcription, RNA splicing and RNA capping take pl...

    Text Solution

    |

  6. The lac operon consists of

    Text Solution

    |

  7. The 3'-5' phosphodiester linkages inside a polynucleotide chain serve ...

    Text Solution

    |

  8. Satellite DNA is useful tool in ;

    Text Solution

    |

  9. Removal of introns and joining the exons in a defined order in a trans...

    Text Solution

    |

  10. Semiconservative replication of DNA was first demostracted in

    Text Solution

    |

  11. What is not true for genetic code?

    Text Solution

    |

  12. Whose experiments cracked the DNA and discovered unequivocally that a ...

    Text Solution

    |

  13. Which one of the following pairs of nitrogenous bases of nucleic acids...

    Text Solution

    |

  14. In the DNA molecule

    Text Solution

    |

  15. Which one of the following pairs of codons is correctly matched with t...

    Text Solution

    |

  16. One gene-one enzyme relationship was established for the first time in

    Text Solution

    |

  17. A sequential expression of a set of human genes occurs when a steroid ...

    Text Solution

    |

  18. The Okazaki fragments in DNA chain growth

    Text Solution

    |

  19. Molecular basis of organ differentiation depends on the modulation in ...

    Text Solution

    |

  20. Telomere repetitive DNA sequences control the function of eukaryote ch...

    Text Solution

    |