not generated 2.3&2.4

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Across
  1. 2. 4 valence electrons, sixth element
  2. 6. 2 or more chemically bonded atoms
  3. 8. energy needed to start a reaction
  4. 9. speeds up chemical reactions
  5. 12. sugar
  6. 13. makes up polymers
  7. 15. made from amino acids
  8. 17. process to make polymers
  9. 18. fat, oil, or wax
Down
  1. 1. ending element or compound
  2. 3. starting element or compound
  3. 4. polymers of nucleotides
  4. 5. active site to speed up reaction
  5. 6. from reactants to products
  6. 7. made from monomers
  7. 8. amino group and carboxyl group
  8. 10. giant molecules
  9. 11. reactants in a catalyst sped up reaction
  10. 14. catalysts in cell
  11. 16. make up nucleicacids