Question

Enzyme that cleaves nuclei acids within the polynucleotide chain is known as

• A. Endonuclease
• B. Exonuclease
• C. Arylsulphatase
• D. Phosphotriesterase

Answer 1

Answer: (A)

Endonuclease

Any enzyme that can break the phosphodiester bond within the polynucleotide chain is called as endonuclease whereas exonuclease cleaves the phosphodiester bond from the end of the polynucleotide chain, arylsulphatase enzyme breaks the sulphatide during the hydrolysis of phenol and phosphotriesterase enzyme converts aryl dialkyl phosphate to dialkyl phosphate and aryl alcohol.

Thus, the correct answer is option A.