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easyMCQNEET 20192026Biology
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Following statements describe the characteristics of the enzyme Restriction Endonuclease. Identify the incorrect statement.

  1. A
    The enzyme cuts DNA molecule at identified position within the DNA.
  2. B
    The enzyme binds DNA at specific sites and cuts only one of the two strands.
  3. C
    The enzyme cuts the sugar-phosphate backbone at specific sites on each strand.
  4. D
    The enzyme recognizes a specific palindromic nucleotide sequence in the DNA.

Solution & Step-by-step Explanation

[Image showing Restriction Endonuclease cutting DNA double strand]
Statement B is incorrect. Restriction endonucleases recognize a specific palindromic sequence and cut both strands of the DNA double helix, not just one. They break the phosphodiester bonds of the sugar-phosphate backbone on each strand.

Practice this question

Try it yourself before checking the explanation above.

Following statements describe the characteristics of the enzyme Restriction Endonuclease. Identify the incorrect statement.
A
The enzyme cuts DNA molecule at identified position within the DNA.
B
The enzyme binds DNA at specific sites and cuts only one of the two strands.
C
The enzyme cuts the sugar-phosphate backbone at specific sites on each strand.
D
The enzyme recognizes a specific palindromic nucleotide sequence in the DNA.

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BiotechnologyRestriction Enzymes

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