Which of the Following Correctly Describes a Strategy That Bacteria

Multiple Choice

Which of the following correctly describes a strategy that bacteria have evolved to defend against infection by phage?

A) The CRISPR-Cas system allows bacteria to recognize phage strains that have previously infected that bacterial lineage and targets the phage DNA for destruction.
B) Bacteria secrete enzymes that diffuse away from the cell and digest phage capsid proteins so the virus cannot infect the cells.
C) Bacteria methylate phage DNA as it enters the cell, targeting it for destruction by restriction enzymes.
D) The lysogenic cycle allows bacteria evolve inhibitors that bind with the phage DNA they contain so their daughter cells will no longer be infected.