LIPIDS

SECTION 1-8 P.36-37

CHARACTERISTICS

• MADE UP OF C, H, O BUT H TO O RATIO IS NOT 2:1

• THE MONOMER IS THE FATTY ACID (ALONG WITH GLYCEROL)

CHARACTERISTICS

• THEY ARE HYDROPHOBIC MOLECULES (MEANINGTHEY CANNOT DISSOLVE IN WATER )

• USED FOR INSULATION, PROTECTION, AND STORAGE

• STORE MORE ENERGY PER GRAM THAN CARBOHYDRATES

TYPES OFLIPIDS

1. FATSA.SATURATED (SOLID AT ROOM TEMP., IN ANIMALS, NO DOUBLE BONDS IN TAILS)B.UNSATURATED (LIQUID AT ROOM TEMP., IN PLANTS, DOUBLE BONDS IN TAILS)

2. OILSCOOKING

TYPES OF LIPIDS

3.WAXESEAR, PLANT LEAVES (FOR PROTECTION)

4.PHOSPHOLIPIDSIMPORTANT TO CELL STRUCTURE AND FUNCTION SINCE THEY MAKE UP CELL MEMBRANES

TYPES OF LIPIDS

5.STEROIDSSEX HORMONES (ESTROGEN, TESTOSTERONE) AND CHOLESTEROL IN CELL MEMBRANES, SYNTHESIZED AND REGULATED IN THE LIVER, BUILD UP IN ARTERIES CAN LEAD TO ATHEROSCLEROSIS