You are presented with the question "Some what make their own membranes?" and the following answer choices: 
- fungi
 - insects
 - viruses
 - mammals
 - fur seals
 - humans
 - animals
 - sharks

Now knowing that some viruses have an envelope of phospholipids and proteins and enveloped viruses make their own membranes, choose the best answer.


 

   viruses      