LABORATORY REVIEW
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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1 glycerol + 1 fatty acid
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1 glycerol + 2 fatty acids
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2 glycerols + 1 fatty acid
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2 glycerols + 2 fatty acids
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Detailed explanation-1: -A diglyceride is a glyceride composed of two fatty acid chains that are covalently bound to a single glycerol molecule via an ester linkage.
Detailed explanation-2: -2 Triglycerides and triglyceride-rich lipoproteins Triglycerides are tri-esters consisting of a glycerol bound to three fatty acid molecules. Triglycerides are the main constituents of vegetable fat and body fat in humans and other animals.
Detailed explanation-3: -Triacylglycerol (TAG), one possible metabolic precursor of DAG, contains three fatty acids (FAs) esterified to the trihydric alcohol glycerol. This implicates that TAG provides three possible sites for lipase-dependent hydrolysis, which can result in three different DAG isoforms.
Detailed explanation-4: -Triglycerides. Triglycerides are composed of a glycerol molecule bound to three fatty acids and are digested by pancreatic lipase. Triglycerides are a major component of very-low-density lipoprotein (VLDL) and serve as a source of energy.
Detailed explanation-5: -A fat molecule consists of two kinds of parts: a glycerol backbone and three fatty acid tails. Glycerol is a small organic molecule with three hydroxyl (OH) groups, while a fatty acid consists of a long hydrocarbon chain attached to a carboxyl group.