Which statement correctly relates VLDL to its appearance in ultracentrifugation?

Which statement correctly relates VLDL to its appearance in ultracentrifugation?

• A. VLDL forms a creamy layer
• B. VLDL is not separated
• C. VLDL forms a turbid layer
• D. VLDL forms a separate pellet

Answer: (C)

Understanding how lipoproteins separate by density during ultracentrifugation helps explain this result. Chylomicrons are the least dense, so they rise to the very top and form a creamy layer. VLDL is denser than chylomicrons but still lighter than LDL and HDL, so it stays in the middle portion as a turbid, milky layer. The turbidity comes from the numerous triglyceride-rich particles scattering light. LDL and HDL, being denser, settle below or form distinct, denser bands. So VLDL appearing as a turbid layer correctly reflects its intermediate density and appearance in this separation.

Understanding how lipoproteins separate by density during ultracentrifugation helps explain this result. Chylomicrons are the least dense, so they rise to the very top and form a creamy layer. VLDL is denser than chylomicrons but still lighter than LDL and HDL, so it stays in the middle portion as a turbid, milky layer. The turbidity comes from the numerous triglyceride-rich particles scattering light. LDL and HDL, being denser, settle below or form distinct, denser bands. So VLDL appearing as a turbid layer correctly reflects its intermediate density and appearance in this separation.