Question

How do bacteria protect themselves against viruses?

Answer 1

These viruses – known as phages – attach to the surface of bacterial cells, inject their genetic material, and use the cells' enzymes to multiply while destroying their hosts. To defend against a phage attack, bacteria have evolved a variety of immune systems

Answer 2

Answer:

the immune systems include a vast array of restriction enzymes, which help cut up the viral DNA and render it ineffective.