Question

How does substrate concentration affect enzyme activity?

Accepted Answer

If the enzyme concentration is fixed, increasing the substrate concentration increases the rate of reaction. This is because at low substrate concentrations the enzyme molecules have only a limited number of substrate molecules to collide with however, after increasing the substrate concentration you increase the number of successful collisions that occur between enzymes and substrates.

Front	How does substrate concentration affect enzyme activity?
Back	If the enzyme concentration is fixed, increasing the substrate concentration increases the rate of reaction. This is because at low substrate concentrations the enzyme molecules have only a limited number of substrate molecules to collide with however, after increasing the substrate concentration you increase the number of successful collisions that occur between enzymes and substrates.

Substrate Concentration Enzyme Increasing Molecules Number Affect Activity