1. I. Molecules of Life

2. A. Carbohydrates 1. Molecules of C, H, O with a 1:2:1 ratio
a. General formula is (CH2O)n
2. Most used is glucose
3. Play roles in storing and transporting energy
4. 1 molecule is a monosaccharide

4. 5. Two molecules linked is a disaccharide
6. Many linked is a Polysaccharide
a. Body stores glucose as glycogen

5. Cellulose- plant sugar; very complex and hard to break down
a. Can’t digest- hard to obtain energy from plants

6. Lipids 1. do not dissolve in water 2. oils, fats, and waxes
3. Supply lots of energy
a. 9 Cal/gram compared to sugar’s 4
4. Consist of Glycerol with 3 long carbon chains called fatty acids

8. 5. Saturated fats have all single bonds
6. Unsaturated fats have a few double bonds
7. Make cell membranes, pigments, and hormones
a. Includes special group called steroids