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).
Describe the role of enzymes in chemical reactions. Ans: Enzymes facilitate the chemical reaction without being changed themselves. For example, an enzyme may bring together two molecules that bond with each other, or break the bond of two other molecules. In either case, the enzyme accelerates the reaction.