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Lipids
Lipids and phospholipids
7
Biology
12th Grade
11/26/2009

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Term
LIPID
Definition
Organic compound that is insoluble in water. E.g. fats and oils
Term
NEUTRAL FATS
Definition
Stored as adipose tissue. Long term energy source/storage. Provides insulation and protection.
Term
PHOSPHOLIPIDS
Definition
Molecule that forms the bilayer of the cell's membranes. Has a polar hydrophilic head bonded to two nonpolar hydrophobic tails.
Term
SATURATED FATTY ACID
Definition
Molecule that lacks double bonds between the carbons of its hydrocarbon chain. The chain bears the maximum number of hydrogens
Term
STEROID
Definition
Type of lipid molecule having a complex of four carbon rings. E.g. testosterone.
Term
TRIGLYCERIDE
Definition
Neutral fat composed of glycerol and three fatty acids.
Term
UNSATURATED FATTY ACID
Definition
Fatty acid molecule that has one or more double bonds between the atoms of its carbon chain.
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