Transcript Lipids: Fats & Oils

Regents Biology
Lipids
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Regents Biology
2008-2009
Lipids
 Examples
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 sex hormones
 testosterone (male)
 estrogen (female)
Regents Biology
Lipids
 Function:
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 very concentrated
 twice the energy as carbohydrates!
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 think whale blubber!
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Structure of Fat
not a chain (polymer) = just a “big fat molecule”
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Saturated fats
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solid at room
temperature
 Limit the amount
in your diet
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deposits in arteries
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Unsaturated fats
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liquid at room
temperature
 the fat molecules
don’t stack tightly
together
 Better choice in your
diet
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Saturated vs. unsaturated
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Other lipids in biology
 Cholesterol
good molecule in cell membranes
 make hormones from it
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 including sex hormones
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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
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________ are on the outside touching
water
 “like” water
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________ are on inside away from water
 “scared” of water
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forms a barrier
between the cell
& the outside
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Let’s build some
Lipids!
Regents Biology
2008-2009