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Biotechnology: Principles and Processes — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYBiotechnology: Principles and Processes1 Mark
MCQ
Restriction endonucleases are used as:
  • A
    Molecular build up at nucleotides
  • B
    Molecular degradation to break up a DNA
  • C
    Molecular knives for cutting DNA at specific sites
  • D
    Molecular cement to combine DNA sites
✓

Answer

  1. Molecular knives for cutting DNA at specific sites

Explanation:

Restriction endonucleases are enzymes that cleave the sugar-phosphate backbone of DNA. In most practical settings, a given enzyme cuts both strands of duplex DNA within a stretch of just a few bases. Several thousand different restriction endonucleases have been isolated, which collectively exhibit a few hundred different sequence (substrate) specificities.

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