Principles of biology; emphasis on cellular structure, genetics, microbiology, development, biochemistry, metabolism, and immunology. This course is appropriate for non-majors and students in the health and paramedical sciences (Sargent College). Students may not receive credit for CAS BI 105 if CAS BI 108 has already been passed. Three hours lecture, two hours lab. Carries natural science divisional credit (with lab) in CAS.