The natural role of restriction enzymes in bacteria is to
A) make conjugation more efficient.
B) allow transposons to move to another place in the chromosome.
C) protect the cell from invading phages.
D) allow cells to accept foreign DNA.
E) provide the cell with new phenotypes, such as antibiotic resistance.

Question

Quizplus · Accepted Answer

Restriction enzymes in bacteria play a natural role in protecting the cell from invading phages by cutting up their DNA. This is part of the bacterial immune system, which helps prevent infection by foreign DNA.

The Natural Role of Restriction Enzymes in Bacteria Is to