Which of the following factors affect enzyme activity?

Explanation

All of these factors can influence enzyme activity:Temperature: Enzymes generally work faster with rising temperatures until they reach an optimum point. Beyond this, high temperatures can cause denaturation.pH: Each enzyme has an optimal pH range. Deviations from this range can alter the enzyme's shape and reduce its efficiency.Concentration of substrate: Increasing substrate concentration can boost reaction rates up to a point of saturation.Radiation: While not typically considered an immediate factor, radiation can cause oxidative damage to enzymes, impeding their function.Thus, all these factors are relevant, making Option E the correct choice. Options A, B, C, and D describe individual factors, but only 'All of these' encompasses the full scope of influences on enzyme activity.