NUTRITION
LIPIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which molecules join to form a triglyceride?
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One glycerol and three fatty acids
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Three glycerols and one fatty acid
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Three glycerols and three fatty acids
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None of the above
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Explanation:
Detailed explanation-1: -The three hydroxyl groups of a glycerol molecule join with the carboxyl group of three fatty acid molecules to form a fat or triglyceride molecule.
Detailed explanation-2: -Since fats consist of three fatty acids and a glycerol, they are also called triacylglycerols or triglycerides. Figure: Triacylglycerols: Triacylglycerol is formed by the joining of three fatty acids to a glycerol backbone in a dehydration reaction.
Detailed explanation-3: -A triglyceride is formed when 1 glycerol molecule links with 3 fatty acid molecules by means of ester bond (covalent bond), in a condensation reaction. Therefore, a lipid is formed by ester bonds.
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