BIOLOGY 171 BIO 171 / BIO171 MODULE 1 EXAM 2

1. True or False: As movement requires energy, metabolism can be defined as a controlled set of biochemical reactions that occur in only motile organisms in order to maintain life. False. Metabolism occurs in all living organisms, not just those that move. 2. True or False: Enzymes slow down chemical reactions to conserve energy. False. Enzymecatalyze (speed up) chemical reactions. 3. What is a cofactor? And give a general example. A cofactor is a small chemical componentthat assists an enzyme during the catalysis reactions. A cofactor is usually metal ions. 1. Define catabolism. Catabolism is the process of breaking down larger molecules into usefulenergy sources. 2. Upon cellular injury, which metabolic process is involved during the growth and repair phases of the cell? The anabolic process would be active as it (by definition) is involved in the buildingup of small complexes into larger complexes.