<p>I majored in Astronomy as an undergraduate. Astronomy is the quintessential science and gave rise to Math and Physics. However, compared to either Biology or Chemistry job prospects in Astronomy are essentially non-existant so I ended up going to medical school. I, of course, had taken many Physics courses but since all U.S. medical schools also require a year each of General Biology, General Chemistry and Organic Chemistry as well I had to really work to squeeze them in. Physics was, of course the easiest for me, I thought General Chemistry and General Biology were of about equal difficultly and not that bad. It was Organic Chemistry that really gave me a hard time and I consider myself fortunate to have escaped with a C in the second semester of Organic Chemistry. Fortunately for me, by that time Hahnemann University School of Medicine (now Drexel University School of Medicine) had already sent me an acceptance letter.</p>