2. Fatty Acid A fatty acid is nothing more than a long C-H chain with a carboxyl group (COOH) on the end. The COOH gives it an acid property. The 3….dots represent the chain is very long.

3. Glycerol Glycerol Always looks the same 3 C’s with 3 OH’s and everything else H’s.

4. To build one lipid molecule, we combine 3 Fatty acids with 1 glycerol by the process of ?

5. What’s What? Identify the glycerol molecule The fatty acids

6. Fats make up most of the cell membrane Remember fats have a hydrophilic head and a hydrophobic tail.

7. Fats are used as an insulator Fats help keep animals warm

8. Energy Fats have a lot of energy stored up in their bonds. That’s why the human body stores fats as an energy source. When your body needs extra fuel, your body breaks down the fat and uses it as energy. Sugar give you only a little bit of energy Fat molecules give off much more energy.

9. Who’s got the power? SugarFatt

10. Saturated and Unsaturated fats There are two kinds of fats saturated and unsaturated Unsaturated fats have at least one double bond (C=C) in one of the fatty acids Saturated fats have no double bonds. (C-C)

14. Steroids Steroids are lipids Since they are lipids they can cross the cell membrane Are hormones Have a 4 ring structure

15. Steroid Abuse Many body builders and athletes use steroids. They are destroying their internal organs Cause liver and kidney damage

16. Waxes Waxes are used to coat and protect things in nature. Your ears make wax Plant leaves make waxes to stop evaporation.

17. Element PresentUsed by organisms Related terms& Info Carbon © Hydrogen (H) Oxygen (O) Only! There is no specific H:O ratio Stored Energy Structure (important part of cell membranes) Saturated fat = C-C bonds are all single Unsaturated fat = Contain at least one double bond C=C. Building blocks of lipids Fatty acid: Glycerol:

18. Is this dehydration synthesis or Hydrolysis? Lipid + water  3 fatty acids + glycerol

19. Don’t forget to finish your lab ! The Mad Scientist