Fact 1: Viruses often infect bacteria.

Fact 2: Bacteria are prokaryotes because they lack a clearly defined nucleus and sub-cellular organelles.

Given the two facts above, answer the question "what do viruses often infect?" with the following options: 
- prokaryotes
 - mammals
 - dead h2o particles
 - volume
 - insects
 - A computer
 - the skin
 - clouds


 

 prokaryotes        