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2003-2004 Lipids 2003-2004 Lipids Examples fats oils waxes hormones steroids sex hormones testosterone (male) estrogen (female)

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Presentation on theme: "2003-2004 Lipids 2003-2004 Lipids Examples fats oils waxes hormones steroids sex hormones testosterone (male) estrogen (female)"— Presentation transcript:

1

2 Lipids

3 Lipids Examples fats oils waxes hormones steroids sex hormones testosterone (male) estrogen (female)

4 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!

5 Structure of Fat not a chain (polymer) = just a big fat molecule

6 5 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

7 6 FATS- can be classified as saturated or unsaturated

8 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

9 Unsaturated fats Plant, vegetable, nuts & cold water fish fats (oils) liquid at room temperature Better choice in your diet

10 Saturated vs. unsaturated saturatedunsaturated

11 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

12 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


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