Tools of Recombinant DNA Technology: Restriction Enzymes MCQ

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• Fragments of DNA formed after treatment with endonucleases are separated by the technique of _______
  ক

  polymerase chain reaction

  খ

  gene amplification

  গ

  blotting

  ঘ

  gel electrophoresis
• The _______ in DNA are base pair sequences that are the same when read forward or backward from a central axis of symmetry.
  ক

  nucleases

  খ

  palindrome

  গ

  termination sequences

  ঘ

  amino acids
• Restriction enzymes belong to a larger class of enzymes called ______
  ক

  proteins

  খ

  proenzyme

  গ

  nucleases

  ঘ

  isozymes
• _____ was the first restriction endonuclease was isolated and characterized.
  ক

  EcoRI

  খ

  BamHI

  গ

  Hind II

  ঘ

  Sma I
• Restriction enzymes are also known as _________
  ক

  ligase

  খ

  polymerase

  গ

  telomerase

  ঘ

  restriction endonucleases
• In genetic engineering, restriction enzymes cleave the DNA at a specific site known as _____
  ক

  restriction

  খ

  recognition

  গ

  promoter

  ঘ

  sense
• From which organism was the first restriction enzyme isolated?
  ক

  Escherichia coli

  খ

  Salmonella typhimurium

  গ

  Bacillus cereus

  ঘ

  Staphylococcus aureus