1. an enzyme is considered a(n) blankbecause it speeds up a chemical reaction without being used up.target 1 of 7 2. in a catalyzed reaction, a reactant is often called a(n) blank .target 2 of 7 3. an enzyme is specific because the shape of its blank matches only particular reactants.target 3 of 7 4. an enzyme speeds up reactions by lowering the blank .target 4 of 7 5. the blank between an active site and its substrate often strains bonds and helps the reaction proceed.target 5 of 7 6. a(n) blank , which is often a vitamin, binds to an enzyme and plays a role in catalysis.target 6 of 7 7. high temperatures or changes in ph can blank an enzyme, causing it to lose its shape and biological activity.
