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).
1 They are often referred to as catalysts because they speed up chemical reactions. 2  Examples include the enzymes lactase and pepsin. 3  Lactase breaks down the sugar lactose found in milk. 4  Pepsin is a digestive enzyme that works in the stomach to break down proteins in food.