Frederick Sanger crossword puzzle

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Across
  1. 4. biochemist's letters
  2. 6. allows body to use sugar
  3. 8. british genomics and genetics institute
  4. 11. after a workout
  5. 12. Alfred Nobel
  6. 14. found in DNA
  7. 15. science that deals with the physical world
  8. 17. prize given for a connection with biological science
  9. 19. the genetic code letters
  10. 20. college he studied natural sciences; hint; 2nd syllable is bridge
Down
  1. 1. long chains of amino acid residues
  2. 2. born in Great Britain
  3. 3. amino acids linked through amide bonds make this
  4. 5. fluorodinitrobenzene
  5. 7. explosive acids
  6. 9. award given for outstanding achievements in any branch of science
  7. 10. small intestine when its proenzyme form
  8. 13. a scientist that works with chemical & physicochemical processes that deal with living organisms
  9. 16. develops free amino groups in insullin
  10. 18. medal given for advancement in natural knowledge