Fact 1: Some viruses have an envelope of phospholipids and proteins.

Fact 2: Enveloped viruses make their own membranes.

Given the two facts above, answer the question "Some what make their own membranes?" with the following options: 
- fungi
 - insects
 - viruses
 - mammals
 - fur seals
 - humans
 - animals
 - sharks


 

   viruses      