Enzyme activity is highest as (A) optimum pH (B) optimum temperature (C) optimum concentration of product (D) both (A) and (B)
Option D.The temperature at which the enzyme shows its highest activity is called optimum temperature. Enzyme activity decreases below or above the temperature. Sometimes, it even becomes inactive. It corresponds to the body temperature of the warm-blooded animal. e.g, 37oc in humans.
