(05.04 MC) This figure is a graph. The y-axis is labeled"reaction rate," while the x-axis is labeled"temperature" in degrees Celsius. The x-axis ranges from 0 to 35. The plot line begins near the bottom of the y-axis at a temperature of zero. At a temperature of 10, the plot line begins to increase gradually, peaking between 15 and 20 degrees. The plot line then gradually descends, returning to its starting point at a temperature of about 33 degrees. Image Courtesy of 3DScience. com The graph above shows the progress of an enzyme-catalyzed chemical reaction. Based on the graph, this enzyme works optimally at 5°C works optimally at 33°C begins to denature above 25°C