Grade 9 - Enzymes

Test yourself on Grade 9 - Enzymes

• What will happen to the rate of enzyme activity if the substrate concentration is continually increased?

• Taq polymerase is an enzyme used in laboratories that has optimum activity at a temperature of 75°C. Suggest why it does NOT denature at this temperature.

• Catalase is an enzyme in the body that breaks down hydrogen peroxide. Hydrogen peroxide is toxic to cells. Which cell type below is most likely to contain catalase?