Copyright ? 2011 Pearson Education, Inc. - 1 - Name_______________________Period___________ Chapter 8: An Introduction to Metabolism Concept 8.1 An organism?s metabolism transforms matter and energy, subject to the laws of thermodynamics 1. Define metabolism. The totality of an organism?s chemical reactions, consisting of catabolic and anabolic pathways, which manage the material and energy resources of the organism. 2. There are two types of reactions in metabolic pathways: anabolic and catabolic. a. Which reactions release energy? catabolic b. Which reactions consume energy? anabolic c. Which reactions build up larger molecules? catabolic d. Which reactions break down molecules? catabolic