2.4 Energy-Storage Lipids: Triacylglycerols

Triacylglycerol

human cells store small amounts of energy-providing materials for use when energy demand is high

carbohydrate glycogen

The most widespread energy-storage material within CELLS

special cells (adipocytes)

triacylglycerols are concentrated primarily in --- that are nearly filled with the material.

Triacylglycerols

are much more effi cient at storing energy than is glycogen

Triacylglycerols

These energy storage lipids are the most abundant type of lipid present in the human body.

Ester

is a compound PRODUCED from the reaction of an ALCOHOL WITH A CARBOXYLIC ACID

Triester

what functional group present in triacylglycerol

Fatty acids

are the carboxylic acids involved in triacylglycerol formation

Triacylglycerol

is a lipid formed by esterification of three fatty acids to a glycerol molecule

Acyl group

is the portion of a carboxylic acid that remains after the !OH group is removed from the carboxyl carbon atom.

Triglyceride

other name of triacylglycerol

simple triacylglycerol

is a triester formed from the esterification of glycerol with three identical fatty acid molecules

mixed triacylglycerol

is a triester formed from the esterifi cation of glycerol with more than one kind of fatty acid molecule

mixed triacylglycerols

Most biochemically important triacylglycerols

simple triacylglycerol Naturally occurring which is rare

Fats and Oil

are naturally occurring mixtures of triacylglycerol molecules in which many different kinds of triacylglycerol molecules are present

FAT

is a triacylglycerol mixture that is a solid or a SEMI-SOLID at room temperature (25C)

OIL

is a triacylglycerol mixture that is a LIQUID at room temperature (25C)