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.
Enzyme: Proteins that speeds up the rate of a chemical reaction in a living organism. An enzyme acts as catalyst for specific chemical reactions, converting a specific set of reactants (called substrates) into specific products.nzyme: Proteins that speeds up the rate of a chemical reaction in a living organism. An enzyme acts as catalyst for specific chemical reactions, converting a specific set of reactants (called substrates) into specific products.