I. Molecules of Life.

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Presentation transcript:

I. Molecules of Life

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

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

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

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

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