1. Bell Ringer: 10/6/17
Objective: Identify the presences of lipids and answer questions based on collected data.
Question: Identify which of the following are considered organic.
H20
Protein
Rocks
Carbohydrate
Lipid
CO2
Glucose
Fat
NH4
SO4
Sulfur O2

2. Lipid Lab
Divide brown paper bag into six equal sections (example on board)
In each section rub a small amount of each of the following foods. (If it is a liquid, just add a couple of drops to make a wet spot)
Apple Juice
Butter
Egg
Honey
Canola Oil
One empty section
Take a paper towel to rub off any excess food.

3. 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

4. Types of Lipids
Fats
Phospholipids
Sterols
Waxes
What do they do?

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

6. 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.

7. Cholesterol Good molecule in Cell Membranes Make hormones from it
Includes sex hormones
Too much cholesterol in blood may lead to heart attack

8. Cell membranes are made out of lipids
Phospholipids
Tails are on the side away from the water
Fear of the water
Heads are on the outside near the water
Love water
Forms a barrier between the cell and outside

9. Monomer - Triglycerides
3 fatty acids attached to 1 glycerol
Triglycerides store twice as much energy as complex carbs
Saturated  Single Bond (Solid at room temp)
Unsaturated  One of more double bonds (Liquid at room temp)
Fatty acid
(unsat.)
Glycerol
Fatty Acid
(saturated)

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

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

12. 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)

13. Bozeman Lipids
Answer Questions
Hand in when finished.
Work on Flipchart: Lipid Section. May move and work with people. At 10:08 we will finish the lipid lap.

14. Finish Lipid Lab
Write out full question & answer underneath on lined paper.
When finished return to your seat with lab for next part of class.
Class Set goes back to station #8

15. Homework
Lipid Honors Homework