Q. Which one of the following hydrolyses internal phosphodiester bonds in a polynucleotide chain ?
A) Lipase
B) Exonuclease
C) Endonuclease
D) Protease
Explanation
[Solution from source] Endonucleases cut phosphodiester bonds within a DNA or RNA chain; restriction enzymes are an example. Exonucleases remove nucleotides only from the ends. Lipases and proteases act on fats and proteins. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.