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Across 2. a simple sugar 8. polymerization of many ethene sub-units 11. fibrous protein found in hairs and nails 14. an amino acid containing an aromatic benzene ring 16. abbreviation of polyvinyl chloride 18. smaller sub-unit of proteins 19. product of the breakdown of aspartame in the body 20. common name for polytetrafluoroethene 22. the simplest amino acid 23. polymer with very stron crosslinks, used in protective equipment

Down 1. a sugar molecule containing a ketone functional group 3. reaction of a trigylceride in the presence of a strong base 4. product formed from the polymerization of a carboxylic acid and an alcohol 5. formation of these can lead to a strengthening between side chains 6. coiling of the primary structure of a polytpeptide 7. polymer used to make "styrofoam" and insulated cuups 9. small sub-unit 10. a polymer made up of many amino acids linked together 12. weak force of attraction between adjacent chains in a polymer 13. lactose (milk sugar) is a disaccharide formed from glucose and this simple sugar 15. a polysaccharide of glucose found in animals 17. long-chain of repeating sub-units 21. polymer produced by Wallace Carothersat Du Pont in 1935