Unit 2 Star R

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Across
  1. 3. Molecules combine to form them
  2. 4. Dislikes water
  3. 5. Only allows certain molecules in or out of the cell
  4. 7. What is produced from a chemical reaction
  5. 9. Cells combine to form them
  6. 11. Molecules go from clustered to spaced out naturally
  7. 14. Molecules that speed up chemical reactions
  8. 16. Diffusion of water
  9. 17. When energy is spent to move molecules across the membrane
  10. 18. Organ systems combine to form them
  11. 19. Atoms combine to form them
  12. 20. Organelles combine to form them
Down
  1. 1. Special region on an enzyme that makes chemical reactions
  2. 2. Organs combine to form them
  3. 6. The energy required to make a reaction
  4. 7. When no energy is used when molecules move across the membrane
  5. 8. Reactant; fits into the active site like a key to a lock
  6. 10. Likes water
  7. 12. When an active site of an enzyme changes shape and the substrate can no longer fit in
  8. 13. Basic units of matter
  9. 15. Inside of the phospholipid bilayer
  10. 18. Tissues combine to form them