Pfft. If it's just one class, and sciences are easier than arts in this manner, just profile the prof/and or class. Get the last 5-6 year's worth of exams/midterms from the library, if the profs been there a while. If he/she hasn't get notes and exams/tests from a previous year's student and blast those, all with an eye to the last 5-6 year's stuff. Undergrad science classes are pretty much the same, format-wise, and regiment-wise, tho the tests may have different wordings, and the textbooks may be different, etc.