Home
Class 12
BIOLOGY
An enzyme catalysing the removal of nucl...

An enzyme catalysing the removal of nucleotides from the ends of DNA is

A

Endonucleases

B

Exonuclease

C

DNA ligase

D

DNA polymerase/Hind II/EcoR I

Text Solution

Verified by Experts

The correct Answer is:
B
`**` Restriction enzymes belong to a larger class of enzymes called nucleases. These are of two kinds, exonucleases and endonucleases.
`**` Exonucleases remove nucleotides from the ends of the DNA whereas, endonucleases make cuts at specific positions within the DNA
Promotional Banner

Topper's Solved these Questions

  • BIOTECHNOLOGY: PRINCIPLES AND PROCESSES

    A2Z|Exercise Section A: Topicwise Questions (topic 3: Processes Of Recombinant Dna Technology) Isolation Of The G|5 Videos

  • BIOTECHNOLOGY: PRINCIPLES AND PROCESSES

    A2Z|Exercise Section A|1 Videos

  • BIOTECHNOLOGY: PRINCIPLES AND PROCESSES

    A2Z|Exercise Section D: Chapter-end Test|50 Videos

  • BIOTECHNOLOGY AND ITS APPLICATION

    A2Z|Exercise Section C : PREVIOUS YEARS' EXAMINATIOIN QUESTIONS (Assertion and Reason Type Questions)|4 Videos

  • ECOSYSTEM

    A2Z|Exercise Section-d Chapter-end Test|50 Videos

Similar Questions

Explore conceptually related problems

Which nuclease remove nucleotides from the ends of the DNA ?

Assertion (A) : EcoRI is restriction endonuclease enzyme. Reason (R): Exonuclease removes nucleotides from the ends of DNA.

Exonucleases remove nucleotides from

Assertion: Exonucleases remove nucleotides from the ends of DNA. Reason: Endonucleases make cuts at specific positions within the DNA.

Consider the following statements. A. Endonucleases remove nucleotides from the ends of the DNA whereas, exonucleases make cuts a specific positions within the DNA. Restriction enzymes cut the strand of DNA a little away from the centre of the palindrome sites. C. Asexual reproductions provides opportunities for variations and formulation of unique combinations of genetic setup. ltbrtgt D. DNA fragments can be separated by a technique known as gel electrophoresis. Of the above statements:

How do enzymes catalyse the reaction ?

Assertion : Nucleases enzymes are of two kinds, exonucleases and endonucleases. Reason: Endonucleases remove nucleotides from the ends of the DNA

DNA nucleotides are attached by

A2Z-BIOTECHNOLOGY: PRINCIPLES AND PROCESSES-Section A: Topicwise Questions (topic 2: Tools Of Tecombinant Dna Technology) Trestriction Enzymes ,
  1. Some foreign DNA fragment is attached to Cla I site of pBR 322. This r...

    Text Solution

    |

  2. Selective markers in plasmids are used to

    Text Solution

    |

  3. An enzyme catalysing the removal of nucleotides from the ends of DNA i...

    Text Solution

    |

  4. BamH I site in present at

    Text Solution

    |

  5. Selectable markers are present in

    Text Solution

    |

  6. In pBR 322 amp^(R) and "tet"^(R) gene are present. When we ligate a fo...

    Text Solution

    |

  7. DNA staining by ethidium bromide is followed by the exposure to UV ray...

    Text Solution

    |

  8. Which is responsible for controlling the copy number of the linked DNA...

    Text Solution

    |

  9. Restriction' in restriction enzyme refers to

    Text Solution

    |

  10. The role of DNA ligase in the construction of a recombinant DNA molec...

    Text Solution

    |

  11. Recognise the figure and find out the correct matching

    Text Solution

    |

  12. Genetic engineering has been made possible due to

    Text Solution

    |

  13. Plasmids are used in genetic engineering because they are

    Text Solution

    |

  14. Which statement is incorrect

    Text Solution

    |

  15. Which of the following is a plasmid ?

    Text Solution

    |

  16. Genes for antibiotic resistance located in Or Bacterial resistance...

    Text Solution

    |

  17. When a recombinant dNA is inserted within the coding sequencing of an ...

    Text Solution

    |

  18. In the E.coli cloning vector pBR 322, the number of selectable marker ...

    Text Solution

    |

  19. Due to difficulty in inactivation of antibiotics, alternate selectable...

    Text Solution

    |

  20. After the fragmentation by restriction endonuclease enzyme, the fragme...

    Text Solution

    |