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Across 2. If the temperature is too low the enzyme will work very ___________. (6) 4. Enzymes are very ____________. (8) 8. The pocket in the 3D enzyme that catalyses a reaction is called the ___________ ______. (6,4) 11. The substrate fits into the active site like a key into a ____. (4) 13. Enzymes are made of __________. (7) 14. The reactants that fit into the enzyme active site are called ___________ (10)

Down 1. The enzyme that breaks down starch is called __________. (8) 3. A factor that affects the activity of an enzyme is ______________. (11) 5. A factor that affects the activity of an enzyme is ____. (2) 6. An enzyme is a biological ____________. (8) 7. Proteins are long chains of __________ _________ folded into a 3D shape.(5,5) 9. Catalysts reduce the amount of __________ needed to start a reaction. (6) 10. If the temperature is too high or the pH wrong the enzyme will be _______________. (9) 12. The enzyme that breaks down hydrogen peroxide is called ____________. (8)