5.1 Enzymes
- Syllabus
- 0610–2026–2027
- Topic
- 5.1
- Level
- —
5.1.1—Catalyst as a substance that increases
- Describe a catalyst as a substance that increases the rate of a chemical reaction and is not changed by the reaction
5.1.2—Enzymes as proteins that are involved
- Describe enzymes as proteins that are involved in all metabolic reactions, where they function as biological catalysts
5.1.3—Why enzymes are important in all
- Describe why enzymes are important in all living organisms in terms of a reaction rate necessary to sustain life
5.1.4—Enzyme action with reference
- Describe enzyme action with reference to the shape of the active site of an enzyme being complementary to its substrate and the formation of products
5.1.5—Temperature, pH and enzyme activity
- Investigate and describe the effect of changes in temperature and pH on enzyme activity with reference to optimum temperature and denaturation
5.1.6—Enzyme action with reference
- Explain enzyme action with reference to: active site, enzyme-substrate complex, substrate and product
5.1.7—Specificity of enzymes in terms
- Explain the specificity of enzymes in terms of the complementary shape and fit of the active site with the substrate
5.1.8—Effect of changes in temperature on
- Explain the effect of changes in temperature on enzyme activity in terms of kinetic energy, shape and fit, frequency of effective collisions and denaturation
5.1.9—Effect of changes in pH on enzyme
- Explain the effect of changes in pH on enzyme activity in terms of shape and fit and denaturation
Objective notes
9 learning objectivesConceptIGCSE Biology