2003-2004 lipids 2003-2004 lipids examples fats oils waxes hormones steroids sex hormones...
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2003-2004
Lipids
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2003-2004
Lipids Examples
fatsoilswaxeshormones
steroids sex hormones
testosterone (male)
estrogen (female)
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Lipids
Function: energy storage
Supplies more energy than carbohydrates: 1 g. fat = 9cal 1 g. carb = 4 cal
structure of cell membrane sex hormones cushions organs insulates body
think whale blubber!
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Structure of Fat
not a chain (polymer) = just a “big fat molecule”
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Fats: Produced by dehydration synthesis * Fats are made with 1 Glycerol molecule and 3 Fatty Acid molecules
Glycerol and fatty acids contain…
CARBON, HYDROGEN, and OXYGEN
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FATS-
can be classified as saturated or unsaturated
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Saturated fats Most animal fats-
butter, meat fat solid at room
temperature
Limit the amount in your diet contributes to
heart disease deposits in
arteries
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Unsaturated fats Plant, vegetable, nuts &
cold water fish fats (oils) liquid at room
temperature
Better choice in your diet
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Saturated vs. unsaturatedsaturated unsaturated
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Other lipids in biology Cholesterol
good molecule in cell membranes make hormones from it
including sex hormones but too much cholesterol in blood may
lead to heart disease
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Other lipids in biology Cell membranes are made out of lipids
phospholipids heads are on the outside touching water
“like” water tails are on inside away from water
“scared” of water forms a barrier
between the cell & the outside