Some viruses have an envelope of phospholipids and proteins, and some viruses are also enclosed by an envelope of fat and protein molecules. Given these facts, what are some viruses enclosed by?  among the following options:
- sub-units of species
 - phospholipids, fat, molecule
 - Germy surfaces
 - it keeps an organism warm
 - Something that comes in a bundle of fibers
 - Something made from fermented ricce
 - microorganisms
 - A compound that donates proton


 

  phospholipids, fat, molecule       