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10 Cards in this Set

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  • Back
Definition of Lipid
a naturally occurring organic compound composed of C, H and O that is insoluble in water, chemically, functionally and structurally diverse; a family of compounds including triglycerides, phospholipids and sterols.
What makes up a triglyceride?
glycerol and 3 fatty acids.
What is the difference between saturated / unsaturated fats?
saturated: no double bonds, solid at room temp, from animals
unsaturated: double bonds, liquid at room temp, from veg.
Types of unsaturated fatty acids?
-polyunsaturated, monounsaturated and trans fatty acids.
make up the cell membrane. similar to triglyceride but 1-2 fatty acids are replaced by a phosphate group.
-precursor to sex hormones
-vitamin D
-aids in nerve transition/impulse/production
Transporters of fat (lipoproteins)
-chylomicrons: carry the fat from intestine to the liver
-LDL: contain cholesterol from liver through blood to muscle / fat
-HDL: carry fat from cells to liver
Role of essential fatty acids?
-regulate blood pressure, immune responses, blood clotting, nerve / brain function
Dietary Fat and Heart Disease?
-lower intakes of fat = lower risk of heart disease
-cholesterol = heart disease
Dietary Fat and Cancer
no scientific evidence that high fat diets cause certain cancers.