Enzymes 4.0 / 5 based on 1 rating ? BiologyEnzymes and digestionIGCSEEdexcel Created by: dulcieeverittCreated on: 23-12-13 13:29 98213564107 Across 1. You need enzymes because the ? inside organisms are too low (11) 4. each enzyme ? a different reaction (9) 5. The molecule an enzyme acts on is called the ? (9) 6. the chemical reactions taking place in cells are known as ? reactions (9) 7. Enzymes are made of ? (8) Down 2. pH inside cells is around ? (7) 3. Catalysts are chemicals which speed up reactions without being ? ? themselves (4, 2) 8. rate of reaction ? when raising concentration of the substrate or enzyme (9) 9. Each enzyme has a small area on its surface called the ? (6, 4) 10. without catalysts most reactions would be too ? to support life (4)
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