Some viruses have an envelope of phospholipids and proteins.
Phospholipids are body fats, too.
Some viruses have an envelope of fats and proteins.
Some viruses have an envelope of
Options:
(1) fats and proteins
(2) allow growth
(3) aerobic capacity
(4) keeps the organism warm
(5) wavelengths and photons
(6) Chemical energy
(7) looseness
(8) To keep their body heat.