Unit 2

3. combination of molecules
4. water fearing
5. only allows certain things in and out of the cell
7. what you finish with after the chemical reaction.
9. combination of various cells
11. molecules naturally move from areas with higher concentration to areas with lower concentration
14. the protein that binds to substrates causing a chemical reaction
16. the diffusion of water through the cell membrane
17. the cell uses energy (ATP) to move molecules throughout the cell
18. all organ systems combined create this
19. combination of atoms
20. basic unit of all life

1. site where substrates and enzymes bind
2. made up of organs
6. buildup of energy required for activation
7. movement of molecules without the cell having the use energy (ATP)
8. reactant (starting things before the chemical reaction)
10. water-allowsg
12. when the site of the enzyme changes shape and can no longer bind to substrates
13. basic unit of matter
15. cell membrane is made up of these
18. combination of tissues