"B-Product." The component released from an enzyme's active site during a chemical reaction is called "product." An enzyme catalyzes a chemical process. The enzyme's structure contains an active site to which a substrate can bind. The active site does have a unique shape to which a complementary substrate can bind. When the substrate attaches to the active site of an enzyme, the reaction commences, leading to a product being produced. Once the product is formed, it is withdrawn from the active site, leaving the enzyme unchanged at the end of the reaction.
When an enzyme is involved in any chemical reaction, the component released from the enzyme's active site is known as substrate. In an enzyme, there is an active site that contains the substrate molecules. Therefore, the substrate is the released component since, in a chemical reaction, the active site is the one involved.
Answer B) Product: This is because enzymes are the bio-catalysts that help in increasing the rate of bio- chemical reactions taking place in an organism. Enzymes have specific regions for the binding of substrate or reactant and are called the active site.