A restriction enzyme is a ____.
A) viral enzyme that randomly cuts DNA
B) DNA ligase enhancer
C) bacterial enzyme that cuts DNA at specific sites
D) single-stranded RNA molecule
E) bacterial enzyme that functions in DNA replication

Question

Quizplus · Accepted Answer

Restriction enzymes are bacterial enzymes that cut DNA at specific sites. They are commonly used in molecular biology for DNA manipulation, such as creating recombinant DNA molecules or for genotyping. Option A is incorrect because restriction enzymes are not viral enzymes. Option B is incorrect because they do not enhance DNA ligase activity. Option D is incorrect because restriction enzymes are not RNA molecules. Option E is incorrect because they are not directly involved in DNA replication.

A Restriction Enzyme Is a ____