Across
- 3. A type of nitrogen base in nucleotides that have two rings as part of their structure.
- 5. Regions on the surface of enzymes that fit the substrate.
- 6. Bonds holding a protein molecule are disrupted, causing a permanent change in shape.
- 7. Bonds holding a protein molecule are disrupted by physical or chemical means, causing a temporary change in shape.
- 8. the type of bond that holds together proteins.
- 13. Made up of nucleotides.
- 15. Proteins that speed up chemical reactions.
- 18. made up of carbon, hydrogen, oxygen, nitrogen and sometimes sulfur.
Down
- 1. Always pairs with cytosine.
- 2. Has ribose sugar, can leave the nucleus.
- 4. A substance that enzymes act upon.
- 5. The amount of energy needed for a chemical reaction to occur.
- 7. Has deoxyribose sugar, stays in the nucleus.
- 8. Another name for proteins.
- 9. Substance formed from the substrate at the end of a chemical reaction with an enzyme.
- 10. Composed of a five carbon sugar, a phosphate molecule and a nitrogen base.
- 11. Made up of an amino acid group and an acid group.
- 12. Bind to active sites and prevent substrates from binding.
- 14. A substance that brings out a chemical reaction without being changed itself.
- 16. Always pairs with thymine.
- 17. A type of enzyme that works on sucrose.