Question

Lipoproteins in Lipid Transport Lipids either enter the body through diet, are released from storage in adipose tissue, or are manufactured in the liver. All lipids are transported in the blood. Because blood is aqueous and lipids are nonpolar, lipids must form associations with other molecules to form lipoproteins that can be transported in blood.

Chylomicrons, very-low-density lipoproteins (VLDLs), intermediate-density lipoproteins (IDLs), low-density lipoproteins (LDLs), and high-density lipoproteins (HDLs) are five types of lipoproteins. Chylomicrons exclusively carry lipids from the diet, whereas the other four lipoproteins carry lipids from one part of the body to another. The following table gives the density and composition (% by mass) for each type of lipoprotein.

The diagram below shows the transport functions of four types of lipoproteins. For example, one type of lipoprotein transports triacylglycerols (TAGs) from the liver to the peripheral tissues. Identify the type of lipoprotein associated with each function.

Drag the appropriate labels to their respective targets.

Answer 1

Liver=====> TAGs to peripheral tissues (VLDL)

Liver=====> cholesterol to peripheral tissues (LDL)

Cholesterol from dead or drying cells=====> Liver (HDL)

VLDL remnants=====> Liver (IDL)