for the mcat, as the previous poster mentioned, you should be familiar with trigonometry, algebra and basic concepts like logarithms/log graphs, as well as with estimating/working with numbers quickly. as for calculus, there are a number of med schools which require it (ie., Harvard and some others), but many don't. Check the MSAR (medical school admissions requirement) handbook, where you can find out school specifics on this matter. You'll be fine!🙂