Enzymes 4.0 / 5 based on 1 rating ? BiologyEnzymes and digestionIGCSEEdexcel Created by: dulcieeverittCreated on: 23-12-13 13:29 83610521749 Across 1. Catalysts are chemicals which speed up reactions without being ? ? themselves (4, 2) 4. rate of reaction ? when raising concentration of the substrate or enzyme (9) 5. Enzymes are made of ? (8) 6. Each enzyme has a small area on its surface called the ? (6, 4) 9. the chemical reactions taking place in cells are known as ? reactions (9) 10. The molecule an enzyme acts on is called the ? (9) Down 2. pH inside cells is around ? (7) 3. You need enzymes because the ? inside organisms are too low (11) 7. after catalysing a reaction the enzyme itself is ? (9) 8. An enzyme works best at it's ? _____ ________ (7, 11)
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