CHEMICAL BASIS OF LIFE

3. atoms of the same elements having different atomic mass number.
5. is the form of carbohydrate storage in animals.
6. synthesis a process in which water is extracted from two monosaccharide sugar molecules.
7. the small sub units that are indivisible.
9. carbohydrates formed by the union of many monosaccharide subunits.
11. are chemicals that have the same chemical formula but a different arrangement of molecules.
14. are pure substances that cannot be broken down into simpler substances.
16. made up of sugar units;most important source of energy.
18. is a plant polysaccharide that makes up plant cell walls.
19. molecule molecules that have positive and negative ends or poles.
20. sum of all chemical reactions that occur within the cell.

1. bond sharing of electrons.
2. formed by two monosaccharides.
4. simple sugar; glucose,fructose, and galactose.
8. bond transfer of electrons.
10. a chemical reaction in which simple chemical substances are combined to form complex chemical reaction.
12. a reaction in which complex chemical structures are broken down into simpler molecules
13. ability to do work ;it is neither created nor destroyed but simply changed.
15. molecules composed of from three to several million subunits.
17. compound compounds that contain the element carbon.