Biology

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Across
  1. 3. the end of a reaction
  2. 4. sugars starches
  3. 5. A molecule that can combine with others to form a polymer
  4. 7. single neulcaic acid form
  5. 8. the thing that starts a chemical reaction
  6. 14. the energy needed to activate a chemical reaction
  7. 15. fats
Down
  1. 1. A substance participating in a chemical reaction, especially a directly reacting substance present at the initiation of the reaction.
  2. 2. chain, longer than ones
  3. 4. a substance changes chemically
  4. 6. a single sugar
  5. 9. dna
  6. 10. causes a reaction
  7. 11. building blocks
  8. 12. a block from protein
  9. 13. a substance that forms things