[Answer] In the reaction that builds a fat ________ groups react with ________ groups.

Answer: hydroxyl; carboxylFatty acids supply the carboxyl groups; the hydroxyls come from glycerol.

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In the reaction that builds a fat ________ groups react with ________ groups. Alcohols and organic acids join to form esters. The glycerol molecule has three hydroxyl (HO–) groups and each fatty acid has a carboxyl group (–COOH). In triglycerides the hydroxyl groups of the glycerol join the carboxyl groups of the fatty acid to form ester bonds: HOCH 2 CH (OH)CH 2 OH + RCO 2 H + R′CO 2 H + R″CO 2 H → RCO 2 CH 2 CH (O 2 CR′)CH 2 CO 2 R″ + 3H 2 O. Fatty acid metabolism consists of various metabolic processes involving or closely related to fatty acids a family of molecules classified within the lipid macronutrient category. These processes can mainly be divided into catabolic processes that generate energy and anabolic processes that create biologically important molecules such as triglycerides phospholipids second messengers local ... Fatty acids or fatty acid residues when they are part of a lipid are a diverse group of molecules synthesized by chain-elongation of an acetyl-CoA primer with malonyl-CoA or methylmalonyl-CoA groups in a process called fatty acid synthesis. They are made of a hydrocarbon chain that terminates with a carboxylic acid group ; this arrangement confers t...

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