Question

1. why are some viruses useful for fighting antibiotic - resistant bacterial infections?

they cause cells to implode
they undergo transduction
they wont infect human cells
they can transfer useful dna

Explanation:

Phages (viruses that infect bacteria) are specific to bacteria. They won't infect human cells, which makes them a potential tool against antibiotic - resistant bacteria. Transduction (transfer of DNA by viruses) is a mechanism in genetics but not the main reason here. Causing cell implode is not a relevant property. Transferring useful DNA is more about genetic engineering rather than the direct reason for fighting infections.

Answer:

they won't infect human cells