The curve given below shows enzymatic activity in relation to two conditions (pH and temperature). What does the two-axis (X and Y) represent?

Step-by-step solution

Enzyme activity depends on three factors: Temperature, pH and substrate concentration. When graph is plotted to show the effect of these factors on enzyme activity bell curve is obtained in case of temperature and pH while sigmoid curve is obtained with respect to substrate concentration. Bell curve shows that enzyme activity is maximum at the mean value of temperature and pH and there is no activity seen at values lower and higher than the mean value. When these graphs are plotted X-axis shows temperature or pH an