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Multiple Choice
What type of bond connects the fatty acid chains to the #1, #2, and #3 positions of glycerol in triacylglycerols?
A
Phosphodiester bonds.
B
Disulfide bonds.
C
Ether Bonds.
D
Ester Bonds.
E
Dehydration Bonds.
Verified step by step guidance
1
Understand the structure of triacylglycerols: Triacylglycerols are composed of a glycerol backbone and three fatty acid chains.
Identify the functional groups involved: Glycerol contains hydroxyl (-OH) groups, and fatty acids contain carboxyl (-COOH) groups.
Recognize the type of reaction: The formation of triacylglycerols involves a dehydration synthesis (condensation) reaction, where water is removed.
Determine the bond formed: In this reaction, the hydroxyl group of glycerol reacts with the carboxyl group of a fatty acid, forming an ester bond (RCOOR').
Conclude the bond type: Each fatty acid chain is connected to the glycerol backbone through an ester bond, which is a covalent bond formed by the reaction between an alcohol and an acid.