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Biological molecules
carbohydrates, lipids, proteins, nucleic acids
20
Biology
Undergraduate 1
10/09/2011

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Term
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Definition
Monosaccharide- (carbohydrate) fuel and building material 
Term
glycosidic linkage
Definition
dehydration rxn joining two monosaccharides forming a disaccharide
Term
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Definition
disaccharide- (carbohydrate) formed from two monosaccharides via a glycosidic linkage 
Term
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Definition
polysaccharide- (carbohydrate) polymer of sugar, storage and structure roles determined by monomers and glycosidic linkage positions
Term
Starch
Definition
(carbohydrate) storage polysaccharide of plants found in chloroplasts and other plastids
Term
glycogen 
Definition
(carbohydrate) storage polysaccharide of animals found in liver or muscle tissue
Term
cellulose
Definition

1. Structural polysaccharide-  (carbohydrate) component of plant cell walls, made of alpha and beta glucose rings. 2. passes through humans as insoluble fiber, though certain enzymes can digest it.

 

 

Term
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Definition
(carbohydrate) Alpha glucose ring, forms helical polymers
Term
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Definition
(carbohydrate) Beta glucose ring, makes straight polymers. Can make microfibrils, building materials in plants
Term
chitin
Definition
Structural polysaccharide (carbohydrate) found in exoskeletons and cell walls of many fungi
Term
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Definition
glycerol fat (lipid) 
Term
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Definition
Fatty acid- Fat (lipid) carboxyl group and long carbon skeleton
Term
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Definition
triacylglycerol- fat (lipid) three fatty acids joined to a glycerol by an ester linkage
Term
saturated fat
Definition
lipid has maximum number of hydrogens, no double bonds, solid at room temp
Term
unsaturated fat
Definition
lipid has one or more double bonds, liquid at room temperature, found in plant or fish fat. 
Term
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Definition
ester linkage, used to form triacylglycerol
Term
hydrogenation
Definition
converting unsaturated to saturated fats by adding hydrogen
Term
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Definition
phospholipid (lipid) major component of cell membranes, forms bilayer in water because of hydrophobic tails and hydrophilic head
Term
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Definition
Steroid (lipid) four-ring carbon skeleton
Term
cholesterol
Definition
steroid (lipid) component of animal cell membranes, can cause cardiovascular disease
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