I have an exam tomorrow that constitues of all the metabolic pathways in body, reactions plus structures. I seem to forget them. What to do?
Basically, it is too late now. Revision is something that has to be done on a regular basis over a protracted period. Last-minute cramming the night before is more likely to confuse than help. The best thing you can do is relax and get a good night's sleep. Do not be worried about some anxiety going into the exam. That's (a) natural and is (b) known to make people perform better in exams.