Bechtel Corporation (Bechtel Group) is the largest construction and engineering company in the United States, ranking as the 5th-largest privately owned company in the U.S. Its headquarters are in the Financial District of San Francisco.
With an advanced biology degree, you can get a job as a biological research scientist. They conduct research, either independently or as part of a team, and they use the knowledge acquired from their research to develop medicine, diagnostic tools, and other products.
Getting a B.A. or B.S. is the easy part compared to trying to identify a career that would utilize your degree the best. Of course you can go on and get a M.S. or apply to graduate schools for a Ph.D. or go on to professional schools and be a physician, a dentist, a pharmacist or a veterinarian. Broadly speaking Biology can be divided into Molecular and Cell, Organismal and Field Biology.