Complete this vocabulary exercise relating to enzymes.Match the words to the appropriate blank in the sentences. catalyst complex denatured specific active site cofactor substrate 1. An enzyme is 2. 3. when it loses its native conformation and its biological activity. An enzyme is considered a up. An enzyme is considered molecule. because it speeds up chemical reactions without being used because of its ability to recognize the shape of a particular 4. A , such as a vitamin, binds to an enzyme and plays a role in catalysis. 5. When properly aligned, the enzyme and substrate form an enzyme-substrate (ES) 6. A substrate binds to an enzyme at the where the reaction occurs. 7. In a catalyzed reaction, a reactant is often called a