Imagine working with the scientists who did this research. One of them proposes testing the hypothesis that Kitl is important for coat coloration. To do this, she plans to observe what happens when an engineered double-stranded miRNA precursor is expressed in mouse embryos. One strand of the miRNA precursor would be complementary to KitlmRNA. How could this approach work to test the hypothesis

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.