Identify the viral structure described.


Fill in the blanks: Polyhedral viruses, Helical viruses, Enveloped viruses, Complex viruses

_________ have a capsid that has polyhedral and helical characteristics, and may have extra structures like protein tails. Bacteriophages are examples.


_________ have an outer lipid bilayer known as a viral envelope, which is studded with proteins. Influenza and HIV are examples.


_________ have many triangular faces. Most have 20 triangular faces and 12 corners. Polio and the papilloma virus are examples.


_________ have long narrow capsids shaped liked cylinders. Rabies and ebola are examples.