Alice put identical bean seedlings in paper cups with good soil. She covered each cup with a different transparent plastic -clear, red, green, and blue. She set the cups in the sun, watered them identically, and kept a record of the height of each plant. What is the control of this experiment?

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.