5.2

Sugar

carbohydrate-organic compound made up of sugar molecules.

monosaccharides-simple sugars contain just one sugar unit called monosaccharides(ex.glucose,frutose, and galatose)

-Sugar molecules are the main fuel supply for cellular work.

Disaccharides

dehydration reaction consturct a disaccharide or double sugar from two monosaccharides

most common disaccharide-surcrose

surcrose-consist of glucose molecule liked to a fructose molecule

Polysaccharides

simple sugar monomers-polysaccharides
starch-polysaccharide found in plant cells 100% glucose

glycogen stores energy in turkey muscle cells.

glyclogen-like starch

cellulose-plysaccharides in plants.

most animals cannot digest cellulose

Concept Check

1.Explain the difference between a monosaccharide and a disaccharide. Give an example of each.
Monosaccharide is simple sugars that contain just one sugar unit however disaccharide is something that cells construct after dehydration reaction. Example for monosaccharides maybe glucose and example of disaccharide maybe starch.
2.Compare and contrast starch, glycogen, and cellulose.
Starch is a polysaccharide found in plant cells that consists entirely of glucose monomers, glycogen is is similar to starch except the cells are found in animal cells, and cellulose is some polysaccharides in plants.
3.How do animals store excess glucose molecules?

Animals store excess glucose molecules in the form of the polysaccharide glycogen.