1. Lipids

2. Lipid Structure Fats, Oils, Waxes
Glycerol molecule
Fats, Oils, Waxes
Provide energy for cells, cell structure, insulation
Lipids & Proteins compose the cell membrane
Cholesterol: gives cell membrane flexibility
Structure (2 parts):
“Head” = glycerol
“Tails” = fatty acids
Monomer: Fatty Acid
Polymer: Lipid

3. Saturated Fatty Acids Long chain of C-C bonds (all single bonds)
Each C is “saturated” with H atoms
Common in animal fats
Health Alert!
Solid at room temps; more likely to clog veins

4. Unsaturated Fatty Acids
Chain with C=C bonds (double bonds)
Double bonds prevents H from attaching
Double bonds makes the chain crooked
Unsaturated: Less space for H atoms
Common in plants
Health Alert!
Liquid at room temps; Less likely to clog veins

5. Saturated vs. Unsaturated18 16

6. Kobe Kuiz What are the two parts of a lipid called?
Which part is the “head”? Which part are the “tails”?
How do saturated and unsaturated fatty acids differ?
Which lipid gives cells their flexibility?
Why are saturated fats less healthy?