Final answer:
The compound in the bloodstream containing a lipid core with a protein, phospholipid, and cholesterol shell is called a lipoprotein.
Step-by-step explanation:
The compound in the bloodstream that contains a lipid core with a protein, phospholipid, and cholesterol shell is called a lipoprotein.
Lipoproteins are composed of various lipids such as cholesterol, triglycerides, and phospholipids, and are carried in the blood in combination with proteins. There are four major classes of lipoproteins found in the blood, including Very low density lipoproteins (VLDL), Low density lipoprotein (LDL), High density lipoproteins (HDL), and Chylomicrons.
These lipoproteins play a crucial role in transporting lipids through the bloodstream to various tissues in the body.