You are presented with the question "What might have an envelope of proteins and enzymes?" and the following answer choices: 
- fur seals
 - some viruses
 - Most plants
 - a fish
 - animal transport
 - animals
 - chickens
 - it needs them

Now knowing that some viruses have an envelope of phospholipids and proteins and phospholipases are the enzymes that degrade phospholipids , choose the best answer.


 

  some viruses       