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Regents Biology
LipidsConcentrated energy molecules
Regents Biology
Lipids – General Info
Lipids are composed of C, H, O long hydrocarbon chains (H-C)
“Family groups” fats phospholipids steroids Waxes
Two Types
Saturated Fats and Unsaturated Fats
Regents Biology
Lipids Functions:
1. energy storage twice the energy as carbohydrates!
2. build cell membrane phospholipids
3. cushions organs
4. insulates body
Regents Biology
Structure of Fat Molecule - Triglyceride
not a chain - just a “big fat molecule”
Regents Biology
Saturated fats vs. Unsaturated fats
Most animal fats solid at room
temperature
Limit the amount in your diet contributes to heart
disease
Plant, vegetable & fish fats liquid at room
temperature
I like Olive Oil
Regents Biology
Hydrophilic heads “attracted” to H2O
Hydrophobic tails “hide” from H2O
bilayer
water
water
Other lipids in biology - Phospholipids
It’s just like ame!!!!
head at one end& a tail
at the other!
Regents Biology 2003-2004
Other lipids in biology - Steroids Example – cholesterol Example - hormones
Regents Biology
Other lipids in biology - Waxes Waxes are a great to to repel water
Regents Biology
What, are youLipid or somethingWinter is coming