BMAT Biology Practice: Part 4

An advanced, interactive quiz on The Integrated System: Synthesizing Your Knowledge.

Problem 29: The Lipoprotein Complex

Medium
IntegrationLipidsProteinsTransport

Low-density lipoproteins (LDLs) transport cholesterol in the blood. An LDL particle consists of a core of cholesterol and triglycerides, surrounded by a shell of phospholipids and proteins. What is the primary function of the phospholipid and protein shell?

A

To enzymatically break down the cholesterol for delivery to cells.

B

To act as a source of energy for the transport process.

C

To make the hydrophobic lipid core soluble in the aqueous environment of the blood.

D

To polymerize the cholesterol molecules into a more compact form.