Bacteriophages kill:

Explanation

Bacteriophages, or phages, specifically kill bacteria because they are viruses that are highly specialized to infect only bacterial cells. They recognize and attach to unique receptors found on the surface of bacteria, inject their genetic material, and use the bacterial machinery to replicate, eventually causing the bacterial cell to burst. Fungi, parasites, and viruses, however, do not have the same surface receptors or cellular structures that phages require to attach and replicate. Since phages are host-specific, their infection process cannot occur in these other organisms, which is why they are harmless to fungi, parasites, and viruses and target only bacteria.