在EEMB和MCDB提供的课程中，获得生物科学学士学位或BS学士学位的专业最为广泛。任一专业的学生都可以修读满足从生态学到分子生物学等多个广泛领域要求的课程，但可以在每个领域的各种课程中进行选择。此外，生物科学专业的选修人数比两个部门提供的专业专业更多。希望在选择生物学课程时拥有最大灵活性的学生通常会选择生物科学学士或理科专业。生物科学学士学位课程面向科学和数学课程，通识教育要求更少。生物科学学士学位允许学生继续进行典型的文科教育，同时仍接受生物学方面的出色培训。
UCSB's undergraduate program in biology is jointly administered by two academic departments: Ecology, Evolution, and Marine Biology (EEMB) and Molecular, Cellular, and Developmental Biology (MCDB). Each department offers several specialized majors leading to a Bachelor of Science (B.S.) degree, and the departments share a general biological sciences major leading to either a B.S. or a B.A. degree. Research and teaching programs cover the full spectrum of biological science from molecular biology and biochemistry to community and ecosystems ecology. Over 150 upper division biology courses are offered to support our majors. These courses include lectures and seminars, laboratory and field studies, and independent studies and group projects.<br><br>The majors leading to a B.A. or B.S. in Biological Sciences are the most general of those offered by EEMB and MCDB. As a student in either major, you'll take courses fulfilling requirements in several broad areas ranging from ecology to molecular biology, but can choose from a variety of courses in each area. In addition, the Biological Sciences majors allow a greater number of electives than the more specialized majors offered by the two departments. One of these majors might be a good fit for you if you wish to have the most flexibility in your choice of biology courses.