EX 11 Flashcards
1
Q
- chemically heterogenous family of biomolecules
- not defined by a particular functional groups or structure
- share with almost all physical properties and not with chemical properties
- insoluble with polar solvents and soluble with nonpolar solvents
- contain many C–C and C–H bonds, thus resulting in their poor water solubility
A
LIPIDS
2
Q
- aka triglycerides
- esters of glycerol and fatty acids
- fats and fixed oils
- produced by Fischer esterifiation
A
TRIACYLGLYCEROL
3
Q
alcohol + acid =
A
ester & water
4
Q
- a triacylglycerol that is solid at room temperature
- more saturated fatty acids (saturated triacylglycerols)
- meat, milk, butter and cheese (animal sources)
A
FATS
5
Q
- a triacylglycerol that is liquid at room temperature
- more unsaturated fatty acids (unsaturated triacylglycerols)
- corn, cotton seed, safflower and sunflower (plant sources)
A
FIXED OILS
6
Q
fats that is not solid at room temp
A
cod liver oil
7
Q
fixed oil that is not liquid at room temp
A
theobroma cacao
8
Q
- esters of saturated fatty acid and high molecular weight monohydric alcohol
- very hydrophobic
- form protective coats in plants & animlas
A
WAXES
9
Q
produced by honey bees Apis mellifera
A
BEESWAX
10
Q
produced usually from sheep Ovis aries
A
LANOLIN
11
Q
produced from carnauba palm Copernicia prunifera
A
carnauba wax
12
Q
susbtitute for spermaceti; from jojoba Simmondsia chinensis
A
jojoba wax
13
Q
- sterols in animals
- provides rigidity and fluidity of the cell membrane
A
CHOLESTEROL
14
Q
sterols in plants
A
SITOSTEROL
STIGMASTEROL
15
Q
sterols in fungi
A
ERGOSTEROL
