Biology 2e is designed to cover the scope and sequence requirements of a typical two-semester biology course for science majors. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens. Biology includes rich features that engage students in scientific inquiry, highlight careers in the biological sciences, and offer everyday applications. The book also includes various types of practice and homework questions that help students understand—and apply—key concepts. The 2nd edition has been revised to incorporate clearer, more current, and more dynamic explanations, while maintaining the same organization as the first edition. Art and illustrations have been substantially improved, and the textbook features additional assessments and related resources.

By the end of this section, you will be able to do the following:

Discuss the ways in which carbohydrate metabolic pathways, glycolysis, and the citric acid cycle interrelate with protein and lipid metabolic pathways
Explain why metabolic pathways are not considered closed systems

By the end of this section, you will be able to do the following:

Describe the overall result in terms of molecules produced during the chemical breakdown of glucose by glycolysis
Compare the output of glycolysis in terms of ATP molecules and NADH molecules produced

Biology, The Cell is an unit of study no. 3 of the Biology full course. It is grounded on studying cells, including cell structure, structure and function of plasma membranes, metabolism, cellular respiration, photosynthesis, cell communication, and cell reproduction.