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Across 5. This enzyme found in the stomach works best in an acidic environment 7. The type of metabolism that breaks up larger molecules into smaller molecules 8. The "best" temperature or pH for a particular enzyme is called its _______________ 9. The region of the enzyme that matches the shape of the substrate (2 Words) 10. The molecule or molecules an enzyme works on 13. When an enzyme's active site has become distorted, the enzymes is said to be ____________ 19. The __________________________ model of an enzyme matches the substrate and the enzyme perfectly (3 Words) 22. The type of metabolism that occurs when smaller molecules are joined together to make a larger one 23. The enzyme ___________ breaks down fats to fatty acids and glycerol 24. The type of organic molecule enzymes are

Down 1. Any substance that speeds up a chemical reaction 2. Excessive ____________ can denature an enzyme 3. Enzymes can be destroyed by lowering the pH with an excess amount of __________ 4. The shape of an enzymes is ________________________ to the shape of the substrate 5. The measure of the hydrogen ion concentration in a solution 6. These are a class of enzymes that can break down proteins 11. All the chemical reactions occuring in living organisms 12. When the substrate concentration is said to be high, the active sites of enzymes become ____________ 14. The official ending of most enzyme names 15. End result of an enzymatic reaction 16. Enzyme which breaks down starch to maltose 17. _____________ like cyanide and arsenic can prevent enzymes from working as they should 18. The enzyme trypsin found in the duodenum works best in an _________________ environment 20. An organic catalyst 21. When someone is ill, a high ___________ can change the shape of many enzymes, interfering with their work 23. ______________ is to key as enzyme is to substrate