Mary K. Campbell was Professor Emeritus of chemistry at Mount Holyoke College, where she taught biochemistry, general chemistry, and physical chemistry, as well as advised undergraduates working on biochemical research projects. Her avid interest in writing led to the publication of many highly successful editions of INTRODUCTION TO GENERAL, ORGANIC, AND BIOCHEMISTRY. She also coauthored BIOCHEMISTRY with Shawn O. Farrell. Originally from Philadelphia, Dr. Campbell received her Ph.D. from Indiana University and completed post-doctoral work in biophysical chemistry at Johns Hopkins University. Her areas of interest included researching the physical chemistry of biomolecules, specifically, spectroscopic studies of protein-nucleic acid interactions. Shawn O. Farrell, a native of Northern California, received his B.S. in biochemistry from University of California, Davis, studying carbohydrate metabolism. He completed his Ph.D. in biochemistry at Michigan State University, where he focused on the study of fatty acid metabolism. Dr. Farrell became interested in biochemistry while in college, as it was relevant to his passion for bicycle racing. He raced competitively for 15 years and now officiates bicycle races worldwide. He has taught biochemistry lecture and laboratory courses at Colorado State University for 19 years and now works for the Bicycle Racing Association of Colorado as its Executive Director. Professor Farrell has written scientific journal articles about specific research projects and about laboratory teaching, as well as articles for sports publications, such as "Salmon, Trout, and Steelheader" magazine. He is co-author with Mary Campbell on BIOCHEMISTRY, 4th through 8th editions (Cengage Learning); co-author with William Brown, Mary Campbell, and Omar Torres on GENERAL, ORGANIC, AND BIOCHEMISTRY; and author of EXPERIMENTS IN BIOCHEMISTRY: A HANDS ON APPROACH (Cengage Learning).

• Preliminares. 1. La bioquímica y la organización de las células. 2. Agua: el disolvente para las reacciones bioquímicas. 3. Aminoácidos y péptidos. 4. La estructura tridimensional de las proteínas. 5. La purificación de las proteínas y técnicas de caracterización. 6. El comportamiento de las proteínas: las enzimas. 7. El comportamiento de las proteínas: enzimas, mecanismos y control. 8. Asociación de lípidos y proteínas en las membranas biológicas. 9. Ácidos nucleicos: cómo la estructura comunica información. 10. Biosíntesis de ácidos nucleicos: replicación. 11. Transcripción del código genético: la biosíntesis del ARN. 12. Síntesis de proteínas: traducción del mensaje genético. 13. Técnicas de biotecnología de ácidos nucleicos. Respuestas. Índice analítico.