Question

How does the substrate concentration affect the velocity of enzyme reaction?

Answer 1

Enzymes are proteins that speed up the rate of a chemical reaction. The molecules upon which enzymes may act are called substrates and the enzyme converts the substrates into different molecules known as products. The rate of a chemical reaction is affected by the total number of enzymes as well as the concentration of substrates. The rate of a chemical reaction increases as the substrate concentration increases. Enzymes can greatly speed up the rate of a reaction, and thus velocity also increases. However, enzymes become saturated when the substrate concentration is high.