Restriction enzymes are found naturally in bacterial cells. They are there to
A) destroy foreign DNA entering the bacterial cell.
B) separate the two strands of the bacterial DNA.
C) integrate viral DNA into the genome of bacteria.
D) splice DNA fragments into the plasmid.
E) repair DNA.

Question

Quizplus · Accepted Answer

Restriction enzymes act as a defense mechanism for bacteria, cutting up foreign DNA from viruses or other sources that enter the bacterial cell, thereby protecting the bacteria from potential threats.

Restriction Enzymes Are Found Naturally in Bacterial Cells