LIFE SCIENCE

Detailed explanation-1: -To catalyze a reaction, an enzyme will grab on (bind) to one or more reactant molecules. These molecules are the enzyme’s substrates. In some reactions, one substrate is broken down into multiple products. In others, two substrates come together to create one larger molecule or to swap pieces.

Detailed explanation-2: -Similar to puzzle pieces fitting together, the active site can only bind certain substrates. This enzyme molecule binds reactant molecules-called substrate-at its active site, forming an enzyme-substrate complex. This brings the reactants together and positions them correctly so the reaction can occur.