lipids Flashcards
predominant for storage role.
triglycerides
predominant for membrane function
Phospholipids
fatty acids with no double bonds - maximum hydrogen attached.
saturated
containing double bonds - fewer hydrogen attached.
unsaturated
both hydrogen on the same side. Low melting point.
cis conformation
hydrogen on opposite sides.
trans conformation
Fatty acids with more than one double bond
polyunsaturated
fatty acids in mammals are in the form of
triacylglycerol
Three fatty acids esterified to a glycerol backbone.
triacyglycerol
(fat cells) hydrophobicity is an advantage because it excludes water, reducing the overall weight of this.
adipocytes
saturated fatty acid chains tend to form a solid phase. Deposits near the organ.
visceral fat
less saturated chains are found in deposits beneath the skin.
subcutaneous fat
even more unsaturated triacylglycerides found in seed lipids.
oils
All C bonded to H.
No C=C double bonds.
saturated fats
most animal fats and butter.
solid at room temperature.
saturated fats
-At least one C=C double bond.
-plant & fish fats, vegetable oils.
-liquid at room temperature.
unsaturated fats
Water-repelling solids. Protective coating.
waxes
-Solid at room temperature.
-Insoluble in water.
-Protective covering for animals and plants.
waxes
Most common polar lipids (amphiphiles)
phospholipids
having both polar and nonpolar affinities in the same molecule.
amphiphiles
Principal components of the cell membrane.
phospholipids
Resemble triacylglycerol - except the 3rd position of the glycerol is esterifies to phosphate.
phospholipids
commonly occurring phospholipid (in mammals).
phosphatidylcholine
Phosphate group, an ester formed with glycerol.
diester
