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