Consist of carbon, hydrogen, & oxygen
Energy containing molecules
Some provide structure
Basic building block is a monosaccharide (CH2O)n ; n = 3,5,6
Two monosaccharides form a disaccharide
Different Forms of Glucose
of a Disaccharide
Formation of Disaccharides
Hydrolysis of a Disaccharide
Important Polysaccharides: Starch
Consists of glucose subunits
Plant energy storage molecule
Glycogen is a very similar molecule in animals.
Starch and glycogen can be digested by animals.
Important Polysaccharides: Cellulose
Composed of glucose subunits
Different bond formed than starch
Structural component in plants
Cannot be digested by animals
Important Polysaccharides: Chitin
Partly derived from non-sugars (nitrogen)
Composes exoskeletons of insects
Note similarity to cellulose.