Which of these statements is not correct about enzymes? 1. enzymes lower the potential energy for the reactions they catalyze. 2. enzymes have specific substrates and optimal conditions. 3. enzymes are mostly proteins that function as catalysts. 4. enzymes may perform a reaction many times until it is degraded. 5. enzyme activity can be regulated by ph and temperature?
Change ΔG for a reaction As shown in the graphs above, enzymes only lower activation energy, but don't change the difference in energy levels between reactants and products.