Question

What two factors affect the rate of enzyme action?

Answer 1

Enzymes :

1. The natural proteins catalyze a chemical reaction taking place inside a living cell.
2. Enzymes increase the rate of reaction.
3. Enzyme activity is the number of substrate molecules transformed into products per minute per molecule of an enzyme.

Factors affecting the rate of enzyme action:

Enzyme concentration:

1. The rate of reaction increases linearly by increasing the concentration of an enzyme.
2. The more the concentration of enzyme, the more the molecules of enzyme react with substrate molecules thus increasing the rate of reaction.

Temperature:

1. Every enzyme catalyzes a particular reaction at an optimal temperature.
2. The rate of an enzyme-catalyzed reaction increases with the temperature rise.
3. The temperature rise exceeds the range of temperature at which an enzyme catalyzes a particular reaction leading to a decrease in the rate of reaction because the enzyme denatures at high temperature.