are too small to be seen with a light microscope
can be seen with an electron microscope
cannot be cultured outside their hosts.
Introduction to Viruses
Although viral diseases are not new, the viruses themselves could not be studied until the
Are aerobic or facultatively anaerobic. (only a few anaerobic fungi are known.)
All fungi are chemoheterotrophs (require organic compounds as a source of energy
Are important in the food chain because they decompose dead plant matterrecy