Final answer:
Enzyme reaction velocities depend on substrate concentration, enzyme concentration, and temperature. High concentrations of substrates or enzymes generally increase the reaction rate, while temperature affects the rate up to an enzyme's optimum temperature beyond which the enzyme may denature.
Step-by-step explanation:
The reaction velocities of enzyme-catalyzed reactions are primarily dependent on three key factors:
Understanding these properties allows us to predict how the enzyme might behave under cellular conditions and respond to regulatory factors or chemicals that may affect its activity.