Question

At the time of Louis Pasteur and Robert Koch, the term"virus" was used to refer to:

	anthrax
	etiologic agent of tuberculosis
	cholera
	etiologic agent of syphilis
	all of the above

Which of the following types of viruses have known extracellular state (existence)?

A: Human viruses, B: Animal viruses, C: bacteria viruses, D: plant viruses, E: All have extracellular state

Host specificity of a virus can be expanded due to phenotypic mixing.

A: True or false

A virus group that is well known for its ability to remain latent in host cells is

A: herpesviridae B:poxviridae C: picornaviridae, D: rhabdoviridae E: togaviridae

Answer 1