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Biotechnology — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYBiotechnology3 Marks
Question
Give reason : Bacteria have restriction enzymes.
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Answer

  1. Restriction endonucleases or restriction enzymes in bacteria help them to recognize and destroy various viral DNAs that might enter the cell.
  2. They cut the phosphodiester back bone at highly specific sites on both strands of DNA.
  3. Thus, these enzymes restrict the potential growth of the virus and protect bacteria.
  4. Hence, bacteria produce restriction enzymes.

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