1. Lipids Primary function store LONG TERM energy Contain C, H, and O
Contain more C-H bonds than carbs  better energy source
Subunits are…
Glycerol (containing a hydroxyl group -OH)
Fatty acids (containing a hydrocarbon chain)
Combine to form a triglyceride

2. Types of Lipids
Fats
Phospholipids
Sterols
Waxes

3. Functions
Long term energy storage
Cell Membranes
Cushion Organs
Insulates Body

4. Monomer - Triglycerides
3 fatty acids attached to 1 glycerol
Triglycerides are most common
Triglycerides store twice as much energy as complex carbs
Unsaturated  one or more double bonds
Saturated with only single bonds
Fatty acid
(unsat.)
Glycerol
Fatty Acid
(saturated)

5. Saturated vs. Unsaturated
- Most animal fats
Solid at room temperature
Limit amount in your diet
Contributes to heart disease
Plants, vegetables, & fish fats
Liquid at room temperature
Better choice in your diet.

6. Phospholipids
Hydrophobic fatty acid tails
Phosphate head is hydrophilic (orange area)
Main component of cell membranes

7. Sterols 4 fused carbon rings with functional groups
Cholesterol: most common type in animals
Functions include: membrane components and hormones (testosterone & estrogen)

8. Waxes
Tightly packed long-chain fatty acids linked to long-chain alcohols or carbon rings
All repel water
Found on the outer covering of a leaf (cuticle)

9. Lipid Lab Class Set: Write answers on separate sheet of paper
Don’t Glob. You want a light layer of each test.
What does translucent mean?

10. Flipbook: Lipid Section
Answer Questions first.
Then cut and glue the structure for a lipid. So you are cutting from the carbohydrate page and then gluing it to the BACKSIDE of the carb page.

11. What is the monomer for a lipid. Draw its nomenclature.
Thursday Closure:
What is the monomer for a lipid. Draw its nomenclature.
How do we test for lipids?
What do we use lipids for?
Homework: Lipid Worksheet (#6 on weebly)