Final answer:
Chylomicrons are the structures that transport water-insoluble triglycerides and cholesterol in the blood.
Step-by-step explanation:
Water-insoluble triglycerides and cholesterol are transported in the blood by structures called chylomicrons. Chylomicrons are lipoprotein complexes that carry lipids like triglycerides and cholesterol through the lymphatic and circulatory systems. They are formed in the intestinal cells and enable fats and cholesterol to move within the aqueous environment of the body's systems.