Biology Crossword

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Across
  1. 5. Platelets help this to clot
  2. 7. Each protein molecule is built up from these acids
  3. 8. This is what changes to genes are called
  4. 9. Changing the shape of an active enzyme until eventually the reaction stops
  5. 10. The process plants carry out
  6. 12. An example of this type of protein would be collagen
  7. 13. An example of the hormone protein
  8. 15. The information contained in genes
  9. 16. Enzymes react slow when this is low
  10. 17. The tiny structures found in cells
  11. 20. The capillary allow the exchange of these between blood and tissues
  12. 21. Needed for growth and repair of bones
Down
  1. 1. The structure of DNA
  2. 2. The normal human will have 23 pairs of these
  3. 3. The 'm' in 'mRNA'
  4. 4. Where ribosomes are found
  5. 6. An example of a catalyse chemical reaction in a living cell
  6. 7. The blood is pumped at high pressure away from the heart into these
  7. 11. What red blood cells transport
  8. 14. The ______ and key mechanism of an enzyme
  9. 18. The red protein that is found in red blood cells
  10. 19. James _____ and Francis Crick worked out the structure of DNA