1. I collect an amino acid and take it to the mRNA strand Who am I? 1. I collect an amino acid and take it to the mRNA strand

Who am I? 2. I am an ion containing both positively and negatively charged groups

3. I am a bifunctional compound with a carboxylic acid and amine group Who am I? 3. I am a bifunctional compound with a carboxylic acid and amine group

4. I am a hormone produced in the pancreas Who am I? 4. I am a hormone produced in the pancreas

5. I am the region in an enzyme where binding to the substrate happens Who am I? 5. I am the region in an enzyme where binding to the substrate happens

6. I have a carbon atom with four different groups of atoms attached Who am I? 6. I have a carbon atom with four different groups of atoms attached

7. I am a DNA segment responsible for a particular protein Who am I? 7. I am a DNA segment responsible for a particular protein

8. I am the full set of genes for an organism Who am I? 8. I am the full set of genes for an organism

9. I can tell you which fragments a molecule is made up from Who am I? 9. I can tell you which fragments a molecule is made up from

10. I can tell you which bonds are present in a molecule Who am I? 10. I can tell you which bonds are present in a molecule

Who am I? 11. I can tell you about the numbers of hydrogen nuclei in different environments

12. We are molecules which are non-superimposable mirror images Who are we? 12. We are molecules which are non-superimposable mirror images

13. I am the cell’s catalyst for protein production Who am I? 13. I am the cell’s catalyst for protein production

14. I tell you the order of amino acids in a protein Who am I? 14. I tell you the order of amino acids in a protein

15. I am the slowest step in a reaction mechanism Who am I? 15. I am the slowest step in a reaction mechanism

16. I am the time taken for half of a particular reagent to be used up Who am I? 16. I am the time taken for half of a particular reagent to be used up

Who am we? 17. We realised that pairs of bases in DNA formed hydrogen bonds and that DNA was hence made up of a double helix

18. I am a tiny circular piece of DNA found in bacteria cells Who am I? 18. I am a tiny circular piece of DNA found in bacteria cells

Who am I? 19. I am the bond responsible for the folding of proteins to give helices and sheets

20. I am a triplet base code for an amino acid used in mRNA Who am I? 20. I am a triplet base code for an amino acid used in mRNA