General Biology -

Biochemistry

LIPIDS

L I P I D S

• Contain H, C, O• More than a 2:1 ratio (H:C)• Do not dissolve in water• Monomers = fatty acids and

glycerol

Role of LIPIDS in Living Things

• Store tremendous amounts of energy.

• Long term (in a seed, around your waist) • Structural - Cell Membranes • Functional – hormones, venoms, poisons, protection (waxy – cuticles, bees, ears)

Lipid monomers are

glycerol

and Lipid monomers are fatty acids

Polar End of Molecule

HYDROPHOBICWater Fearing

Non Polar End

HYDROPHILICWater Loving

Formation of Lipids

1 Glycerol – ho ho ho

+

3 Fatty Acids

Dehydration Synthesis

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Hydrolysis or Digestion

Triglycerides can be solid or liquid….

• Fats are solid at room temperature.

• Oils are liquid at room temperature.

Saturated

Unsaturated

Cold waterfish

One of the most important Lipids we will consider all year is a