In Nature, the Function of a Restriction Enzyme is To

Question

In nature, the function of a restriction enzyme is to
A)connect DNA fragments after replication.
B)protect bacteria from invading foreign DNA.
C)speed up the rate at which bacteria can metabolize their energy sources.
D)make numerous copies of a given gene.

Accepted Answer

The function of a restriction enzyme is to protect bacteria from invading foreign DNA. They cut foreign DNA at specific sequences, preventing it from replicating within the bacterium, and therefore acting as a defense mechanism.