Multiple choice

A restriction endonuclease breaks the bond between the ________.

  1. base pair of DNA molecules

  2. base pairs of a DNA-RNA hybrid

  3. sugar and phosphate components of nucleic acid molecule

  4. exons and introns of a DNA molecule

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A restriction endonuclease is an enzyme that cuts the DNA at or near a specific recognition nucleotide sequences known as restriction sites. It breaks the bond between the sugar and phosphate components of nucleic acid molecule.