Enzymes

What the syllabus asks of you

• Describe a catalyst as a substance that increases the rate of a chemical reaction and is not changed by the reaction
• Describe enzymes as proteins that are involved in all metabolic reactions, where they function as biological catalysts
• Describe why enzymes are important in all living organisms in terms of a reaction rate necessary to sustain life
• Describe enzyme action with reference to 6 Explain enzyme action with reference to: active the shape of the active site of an enzyme site, enzyme-substrate complex, substrate and being complementary to its substrate and the product formation of products 7 Explain the specificity of enzymes in terms of the complementary shape and fit of the active site with the substrate
• Investigate and describe the effect of changes 8 Explain the effect of changes in temperature in temperature and pH on enzyme activity on enzyme activity in terms of kinetic energy, with reference to optimum temperature and shape and fit, frequency of effective collisions denaturation and denaturation 9 Explain the effect of changes in pH on enzyme activity in terms of shape and fit and denaturation