Virus Shapes

Polyhedral

Polyhedral viruses have many triangular sides. Examples of polyhedral viruses: HPV, Adenoviruses (cold), polio, Hep A

Spherical

example of spherical virus: influenza

Structure of spherical virus may be studded with receptors, may be enveloped

Helical

example of helical virus: TMV

What nucleic acid does a helical virus contain: either DNA or RNA

Complex

Complex viruses: no identifiable capsids but several layers of COATS around NA.

Examples of complex virus: Bacteriophage, poxviruses