5.2 Carbohydrates provide fuel and building material Summary

Sugars:
1.sugar molecules made up an organic compound called carbohydrate
2.sugars contain 1 carbon: 2 hydrogen: 1 oxygen.
3.any carbohydrate's molecular formula is : CH2O
4.most sugar moleculs in nature are ring shape carbon skeletons
5.monosaccharides are simple sugars that contain just one sugar unit

6.sugar molecules, particularly glucose, are main fuel supply for cellular work
7.carbon skeletons of monosaccharids are used as raw material for manufacturing
other kinds of orgainc molecules by cells
8.disaccharide = ' double sugar'
( ex: sucrose)
9.sucrose consists a glucose moleculed linked to a fructose molecule
10.sucrose is a major carbohydrate in plant sap
11.body store glucose in larger molecules for later use

Polysaccharides:
1.long polymer chains made up of simple sugar monomers are called polysaccharides
2.starch is a polysaccharides being found in plant cells that consists only glucose monomers
3.the stored glucose becomes available when plants break down starch molecules
( ex: foods rich in starch)
4.glycogen is a form of polysaccharides which is the way animals such as turkeys and humans
store excess sugar
5.glycogen is highly branched than a starch polymer
6.cellulose is a kind of polysaccharides that's in plants which serve as building materials
7.cellulose protect cells, stiffen the plant, and prevent it from flopping over
8.most animals, including people, cannot digest cellulose
9.almost all carbohydrates are hhydrophilic
10.monosaccharides and disaccharides dissolve in water and form suagary solutions

Concept Check
1. Explain the difference between a monosaccharide and a disaccharide. Give an example of each.
A monosaccharide is sugar that contain one sugar unit, a disaccharide has double sugar which formed by two monosaccharide

2.Compare and contrast starch, glycogen, and cellulose.
Starch, glycogen, and cellulose are all polysaccharide. Starch is in plant cells, glycogen is in animal cells, cellulose is in plants and are served as building materials.

3.How do animals store excess glucose molecules?
By incorporate excess glucose molecules into larger carbohydrates, or the excess glucose molecules may be used to make fat molecules