Item28 time remaining 51 minutes 45 seconds 00: 51: 45 item 28 item 28 time remaining 51 minutes 45 seconds 00: 51: 45 lillette, 9, has been diagnosed with a cancer in which the bone marrow manufactures an abundance of abnormal white blood cells, which crowd out normal cells, making her susceptible to bruising and infection.

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.