Final answer:
Lipoproteins consist of a core of nonpolar triglycerides and cholesterol esters coated by proteins, phospholipids, and free cholesterol.
Step-by-step explanation:
The structure you are describing is a lipoprotein. Lipoproteins are complexes that transport lipids in the body. They consist of a core of nonpolar triglycerides and cholesterol esters, which are coated by proteins, phospholipids, and some free cholesterol.