. Dietary fat is incorporated into micelles in the duodenum to facilitate digest
ID: 184070 • Letter: #
Question
. Dietary fat is incorporated into micelles in the duodenum to facilitate digestion. It is however packaged into chylomicrons in intestinal cells for delivery in the circulation. Complete the following table by (a) indicating whether or not the listed compounds can be found in association with micelles and/or chylomicrons, and (b) suggesting the intermolecular force(s) that hold them in place in micelles and/or chylomicrons. (5 x 2 marks) Compound Micelles chylomicrons (0) triacylglycerol YorN Y or N (ii) cholesteryl ester YorN Y orN (ii) phospholipid YorN Y or N (iv) cholesterolYorN Y or N (v) bile salt YorN Y or NExplanation / Answer
Micelles and chylomicrons are the biochemical entities which hold a fat molecule in them in order to achieve their transport across the body. These biochemical entities withold only fat molecules and not any other biomolecule. These biochemicals are held in the micelles and chylomicrons by hydrogen bonds.
Hence, the description can be found as below:
COMPOUND MICELLES CHYLOMICRONS FORCES
Triacylglycerol No No None
Cholestryl ester Yes No Hydrogen bonds
Phospholipid Yes Yes Hydrogen bonds
Cholestrol Yes No Hydrogen bonds
Bile salts No No None
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