Chylomicrons core is formed by ?
a) Triglyceride
b) Triglyceride and Cholesterol
c) Triglyceride, Cholesterol and Phospholipids
d) Free fatty acids
Correct Answer - B
Ans. is ‘B’ i.e., Triglyceride and Cholesterol [Ref Harper 27th/e p.
218; Lehninger 4th/e p. 633]
The surface is a layer of phospholipids, with head groups facing the
aqueous phase. Triacylglycerols sequestered in the interior make up
more than 80% of the mass.
Several apolipoproteins that protrude from the surface (B-48, C-III,
C-II) act as signals in the uptake and metabolism of chylomicron
contents.
The diameter of chylomicrons ranges from about 100 to 500 nm.
Core: It’s made up of neutral lipids like triacylglycerols and
cholesterol/cholesterol esters. Shell: composed of apolipoproteins,
phospholipids.