Answer:
D, amino acids is the answer.
1 and 2 both have very important things to do with it
Answer:
~ Three types of lipid are found in biological membranes, namely phospholipids, glycolipids and sterols.
Explanation:
~ Phospholipids consist of two fatty acid chains linked to glycerol and a phosphate group. Phospholipids containing glycerol are referred to as glycerophospholipids