Steroid hormones are made of lipids, such as phospholipids and cholesterol, and steroids are a kind of growth hormones. Given these facts, growth hormones are derived from phospholipds and: among the following options:
- Energy.
 - cholesterol
 - animals
 - layers of fat
 - fur and fat
 - Chemical energy
 - kinetic energy
 - Energy


 

  cholesterol       