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Bio Definitions 6.1

Textbook Definitions

TermDefinition
Lipid Fatty macromolecule that are soluble in organic solvents and insoluble in water, fats, oils, waxes, steroids & phospholipids
Hydrocarbons Organic molecule that contains only hydrogen & carbon atoms
Fatty Acids Lipid w/ a hydrocarbon chain bonded at one end to a carboxyl group, stores chemical energy
Saturated Lipids w/ only Carbon - Carbon single bonds, high melting points
Unsaturated Lipids w/ at least one Carbon - Carbon double bond, causes links in the hydrocarbon chain, low melting point
Waxes Long chains of non-polar lipid, fatty acids or long chain alcohols, solid
Oil Polysatured fat that is liquid at room temperature
Steroids Lipid w/ four-ring hydrocarbon structure, hormones, muscles, & immune system
Fats Lipids w/ three fatty acid molecules, insulation, long-term energy storage
Glycerol Three carbon molecules that form the “backbone” of phospholipids & fats
Ester Linkage Covalent bond, condensation reaction b/tw carboxyl & hydroxyl groups, joins fatty acids and glycerol to form a fat or phospholipid
Phospholipids Lipids w/ hydrophilic head & hydrophobic tail, major component for plasma membrane and organelle membrane
Amphipathic Substances w/ hydrophilic & hydrophobic regions, “dual-sympathy”
Created by: KimbaPasch
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