All Washington cities. Washington: Portal to the Pacific Northwest. Washington State, positioned in the upper left corner of the map, offers an abundance of recreational, educational, cultural, and career opportunities. The state's largest city, Seattle, is a harbor town situated on Puget Sound, and is a popular choice for relocation.
Enzymes speed up the rate of chemical reactions by lowering the energy of activation (the amount of energy needed to begin a reaction).nzymes speed up the rate of chemical reactions by lowering the energy of activation (the amount of energy needed to begin a reaction).
ENZYMES AND THE RATE OF CHEMICAL REACTIONS. Introduction: Enzymes are proteins that speed up the rate of a chemical reaction without being used up. Enzymes are usually specific to particular substrates. The substrates in the reaction bind to active sites on the surface of the enzyme.