How does an increase in enzyme concentration affect enzyme activity?

An increase in enzyme concentration typically leads to an increase in enzyme activity, thereby enhancing the reaction rate. Enzymes are biological catalysts that facilitate chemical reactions by lowering the activation energy required for the reaction to proceed. When more enzyme molecules are present, there are more active sites available to bind with substrate molecules, which allows reactions to occur more frequently.

However, it is important to mention that this increase in reaction rate will continue only until all substrate molecules are occupied. Once the substrate is fully saturated, adding more enzyme would not further increase the reaction rate, as there would not be any additional substrate available for the enzyme to act upon.

In contrast, options that suggest a decrease in reaction rate, keeping it constant, or having no effect fail to acknowledge the relationship between enzyme concentration and reaction rate. The presence of more enzymes generally facilitates a higher likelihood of substrate collisions and consequently speeds up the overall reaction process.