Usually the format for exams in labs is based on identification and labeling rather than a paper based multiple choice test. For instance, in A&P stations would be set up on each table and numbered 1-50. The items might be microscope slides, sheep's brain, bones, models of a kidney, etc and the question will ask you to identify the structure, list its function, etc. Your teacher should explain how it will work. Since there is no guessing involved, you either know it or you don't so you really want to memorize and understand what you are studying. Good luck