Asalt bridge between an arginine and a glutamic acid has the two bridging atoms 3.5 å apart. assume that these bridging atoms have elementary charges of +1 and –1, respectively. what is the energy if the residues are a) on the protein surface (ε = 80) and b) in the core of the protein (ε = 2)?

1. an enzyme is considered a(n) because it speeds up a chemical reaction without being used up.2. in a catalyzed reaction, a reactant is often called a(n) . an enzyme is specific because the shape of its matches only particular reactants.4. an enzyme speeds up reactions by lowering the . the between an active site and its substrate often strains bonds and the reaction proceed.6. a( , which is often a vitamin, binds to an enzyme and plays a role in catalysis.7. high temperatures or changes in ph can an enzyme, causing it to lose its shape and biological activity.