This introductory text covers the important concepts and ideas of biochemistry. Biochemical reactions and processes are placed in a cellular or organelle context, demonstrating the importance to life of biochemical reactions. Learning aids include chapter outlines, introductory boxed essays, learning goals, key concepts, perspective boxes and end-of-chapter problems. There is strong coverage of plant and animal biochemistry, giving students a balanced presentation of important ideas. The text assumes only a basic knowledge of general chemistry and biology.