1. Lipids (a.k.a. fats)

2. Dehydration synthesis (here we go again. Same vocabulary over and over
Lipids also contain C, H, O elements from CHNOPS
contain units of 1 molecule glycerol linked to 3 fatty acids (called a triglyceride) through dehydration synthesis (makes water)

3. Lipids
A Lipid is called a triglyceride and it’s formed by dehydration synthesis (remove water) and it is broken down by hydrolysis (adding water)

4. Lipid diagram (triglyceride)

5. Formation of a triglyceride (lipid)
Dehydration synthesis occurs & removes water

6. Types of Lipids
saturated fats-animal fats that are solids at room temperature (contain single bonds)-solids-ex. Butter (hint: to remember saturated is single bonds think of the “s” in saturated and the “s” in single)

8. Types of Lipids
unsaturated fats- oils from plants (contain double bonds)-liquids at room temperature
ex. Olive oil

9. Unsaturated fats contains double bonds while saturated fats contain single bonds in the fatty acid chain

10. Types of Lipids cholesterol-lipid found in animal foods
helps build cell membranes
Note: not all cholesterol is bad, you do need some to build your cells but you don’t want a lot because it can lead to blocked arteries, etc.

12. Purposes of Lipids
provide long term energy storage, insulation, and protection
general sources of lipids-fats, oils, waxes, meat, fish, poultry, dairy
products (30 % of daily calorie intake)