Final answer:
Lipids are made on the cytosolic side of the smooth endoplasmic reticulum (ER) in eukaryotic cells. They are carried through the body by lipoproteins, which are particles suspended in blood.
Step-by-step explanation:
Lipids are made primarily on the smooth endoplasmic reticulum (ER) in eukaryotic cells. Specifically, the synthesis of fatty acids and phospholipids occurs on the cytosolic side of the ER. Once synthesized, lipids are carried through the body by lipoproteins, which are particles suspended in blood. Lipoproteins have a core made up of glycerides and cholesteryl esters, and an outer layer composed of phospholipids, proteins, and cholesterol.