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Question

Molecular scissors, which cut DNA at specific site is

A
Restriction endonuclease
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B
Ligase
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C
Cellulase
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D
Pectinase
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E
Polymerase
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Solution

The correct option is A Restriction endonuclease
  • Restriction enzymes are molecular scissors that cut DNA into pieces. A restriction enzyme (or restriction endonuclease) is an enzyme that cuts DNA at or near specific recognition nucleotide sequences known as restriction sites.
  • Ligases join two DNA segments by establishing a new phosphodiester bond between them.
  • Cellulase enzymes help in the digestion of starch while pectinase breaks down pectin, a polysaccharide found in plant cell walls.
  • Polymerase synthesizes new DNA strands by using parent DNA strands as templates.

So, the correct answer is (A).

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