What are Enzymes ?
Enzyme are biological catalyst that speeds up the rate of the reaction without being used up. Enzymes speeds up the rate of chemical reaction by providing an alternative route to the reaction which lowering the activation energy. Since the activation energy of the enzyme mediated reaction decreases, there are more molecules that possess energy equal to greater than the activation energy resulting in the successful collision and increasing the rate of the reaction. Enzymes are protein in nature and therefore are sensitive to temperature and pH. With increase in pH and temperature beyond the optimum, enzymes tends to denature lowering the rate of the reaction.
ML
Related Biology GCSE answers
All answers ▸Microorganisms cause diseases. The human body has many ways of defending itself against microorganisms. Describe two ways the body prevents the entry of microorganisms.
Explain the differences between aerobic and anaerobic respiration (in animals), when the transition occurs and why there is a need for the body to remove lactic acid that is built up during the process?
How do bacteria have a role in the nitrogen cycle?
Describe how the lungs are adapted for gas exchange.