Take a general biology course that includes a lab during your first semester of college. Getting this requirement fulfilled early will leave plenty of room in your schedule for additional biology courses that will help you in medical school.
Do well in your biology course with a lab. This is one of the key requirements for medical school and your grade is likely to be scrutinized closely.
Schedule an additional biology course with a lab during your second semester of college. For example, a cellular and molecular biology course often includes a lab and will be helpful when applying for medical school.
Plan to take more advanced biology courses that will help with your medical studies during your second and third year of college. Courses like organismal diversity and human physiology are more advanced biology courses that often include a lab.
Continue with your biology studies into your senior year. At this point, many universities allow you to take biology electives, meaning you can choose the courses you take. Try to continue with biology courses that interest you and that will be helpful in medical school, such as cell biology, genetics and microbiology.