In ultracentrifugation, the observation of a turbid layer indicates the presence of which lipoprotein?

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Multiple Choice

In ultracentrifugation, the observation of a turbid layer indicates the presence of which lipoprotein?

Explanation:
In ultracentrifugation, lipoproteins separate by density, and the least dense particles rise to the top. Chylomicrons are the most triglyceride-rich and have the lowest density, so they form a milky, turbid cream layer at the very top of the tube. This top layer is a hallmark of chylomicrons. Other lipoproteins—VLDL, LDL, and HDL—are denser and stay lower in the tube, often appearing as distinct bands or clearer layers rather than a turbid top. So the presence of a turbid top layer specifically points to chylomicrons.

In ultracentrifugation, lipoproteins separate by density, and the least dense particles rise to the top. Chylomicrons are the most triglyceride-rich and have the lowest density, so they form a milky, turbid cream layer at the very top of the tube. This top layer is a hallmark of chylomicrons. Other lipoproteins—VLDL, LDL, and HDL—are denser and stay lower in the tube, often appearing as distinct bands or clearer layers rather than a turbid top. So the presence of a turbid top layer specifically points to chylomicrons.

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