M.D.

You do not need a Biology degree to get into medical school. As far as medical schools are concerned, you just need a degree, any degree, and they will take it from there. So, feel free to major in anything you want as long as you do all the things that medical school is looking for (see criteria). If you major in something other than biology, however, you will need to include several courses in addition to your major courses because they cover material on the MCAT. For an exact accounting of these courses, see here. Most successful applicants to medical school, however, are biology majors. The nice thing about being a biology major is the required degree from KSU already includes all of the required courses for medical school. In addition, most pre-meds are interested in human biology and the courses that deal with that material are usually only found in the biology department. On top of that, many of the courses medical students take are similar to course already offered in this department; as such, you can often get a leg-up on the material by taking it now.

If you are a student that has a previous degree and just want to take enough courses to get into medical school, that is doable (see above link). You should be aware, however, that medical schools will look at your highest (latest) degree to determine your GPA, not just your latest hours for the extra courses. So, if you have a degree, but didn't do as well as you should have (see criteria), you may want to consider getting a new degree. In addition, if you are a student that already has a biology degree and didn't do so well, but would like to go to medical school, you may want to consider getting a master's degree. You will have to excel in the course work and you will have to complete the degree, but at least the medical schools will have a new degree to use for calculations.