Question: what are the physical properties of viruses?
Answer: Nucleic acid -contains 3-400 genes. ... 
Capsid -The capsid accounts for most of the virion mass. ... 
Envelope -this is an amorphous structure composed of lipid, protein and carbohydrate which lies to the outside of the capsid. ... 
Spikes. ... 
Icosahedral -The protomeres aggregate in groups of five or six to form the capsomere.