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13 Cards in this Set

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lipids contain: (difference)
c, h and o. Lower proportion of x and higher of h compared with carbs.
lipid uses:
structural and storage molecules. can be respired to release energy.
glycerol structure:
H
H-C-OH
H-C-OH
H-C-OH
H
Saturated Fatty acid structure:
HOOC-R or R-HOOC (carboxyl group = COOH). Hydrocarb, replace h on end with C 2bondO 1bondOH. Eg stearic
Unsaturated fatty acid structure:
same as nsaturated byt double bond somewhere in middle between 2 carbs.
2bonds cause chain to kink.
glycerol + 3 fatty acids =
tryglyceride + 3 water (tri = E)
diglyceride =
F.
Phospholipid =
diglyceride + phosphate group.
phosphate and glycerol make
polar head. hydrophilic.
phospholipid pic
o=
Force many phospholipids underwater:
bilayer, heads out of them.
Lipid test:
emulsion test, ethanol. Shake food with alcohol in tube, lipids dissolve in ethanol. Pour off ethanol. Add equal quantity water into alc and shake, Milky-white emulsion / clear.
tryglycerides in humans
under the skin in cells of the adipose layer.