生物科学包括从分子的结构和功能到生物群落的行为和进化的水平上对生命系统的研究。该系提供了四种不同的途径来掌握这一广泛领域的技能和知识。生物学学士学位和学士学位课程为生物学提供了广泛的介绍，并为学生提供了建立适合其特定兴趣的学习计划的机会。专注于生物学特定方面的研究计划是行为神经科学和分子生物学领域的文学学士和理学学士学位以及生物化学领域的理学学士学位。大学和文理学院的要求涉及以下所有专业。
Lehigh's undergraduate major in behavioral neuroscience focuses on the biological basis of human behavior. The program combines the disciplines of psychology and biology to provide an understanding of how the behavior of humans and other animals is controlled by physiological systems. The biological sciences include the study of living systems at levels ranging from the structure and function of molecules to the behavior and evolution of communities of organisms. The biological sciences include the study of living systems at levels ranging from the structure and function of molecules to the behavior and evolution of communities of organisms. The Department offers four different routes to mastering skills and knowledge in this broad area. The B.A. and B.S. programs in Biology provide a broad introduction to biology with opportunities for students to create a program of study suited to their specific interests. Programs of study focused on particular aspects of biology are the B.A. and B.S. degrees in the areas of Behavioral Neuroscience and Molecular Biology and the B.S. degree in Biochemistry. University and College of Arts and Sciences requirements pertain to all of the majors listed below.