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 An enzyme is a protein that acts as biological catalyst. A catalyst is a substance that speeds up the rate of a chemical reaction. Catalysts work by lowering a reactionâs activation energy. Temperature, pH, and regulatory molecules can affect the activity of enzymes.Chemical Reactions. 2.ubstrates bind to a part of an enzyme called the active site and remain bound to the enzyme until the reaction is complete, when the products are released. Temperature, pH, and regulatory molecules can affect the activity of enzymes. 1.