Scene at the Signing of the Constitution of the United States. The Constitutional Convention (also known as the Philadelphia Convention, the Federal Convention, or the Grand Convention at Philadelphia) took place from May 25 to September 17, 1787, in Philadelphia, Pennsylvania.
In living cells, WHAT serve as biological catalysts. Each acts on a specific substance called the enzyme's substrate and each catalyzes only one reaction. As catalysts, enzymes typically accelerate chemical reactions. The enzyme molecule has an active site, a region that will interact with a specific chemical substance.
Enzymes are proteins that catalyze (i.e. accelerate) chemical reactions.[1] In enzymatic reactions, the molecule s at the beginning of the process are called substrate s, and the enzyme converts them into different molecule s, the products. Enzymes. Enzymes are catalysts.Most are proteins. biological macromolecule that acts as a catalyst. Most enzymes are proteins, but certain RNAs, called ribozyme s, also have catalytic activity. Enzymes and Metabolism. 1) Enzymes are proteins which catalyze reactions in cells.