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

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYBiotechnology: Principles and Processes2 Marks
Question
Why do prokaryotes (bacteria) have restriction enzymes but not eukaryotes?
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Answer

  • The prokaryotes/ bacteria have restriction enzymes to restrict the growth of bacteriophages, which infect them; it is a defence mechanism of bacterial cells.
  • They do so by cutting the DNA of the phage with restriction enzyme.
  • Bacteriophages do not infect eukaryotes, eukaryotes have other defence mechanisms.

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