A feature that may be found in viruses but never in bacteria is A feature that may be found in viruses but never in bacteria is. a. a sensitivity to antibiotics. b. an ability to infect more than one type of host. c. may contain an RNA genome. d. they require a microscope to be viewed.

Option D) they require a microscope to be viewed.

Explanation:

Unlike bacteria, virus is a ultramicroscopic pathogenic particle capable of passing through bacteriological filters. So because, the virus is far much smaller than a bacterium, viewing a virus will always require a microscope (electron microscope to be precise) unlike a bacteria that is even visible in culture plates.

Thus, option D is the answer