I took both Micro & Physio together. I passed both successfully....while there is quite a bit of memorization & a ton of studying, I found that alot of similar information was addressed in both classes (ie: immune system, metabolism, etc). I was like you - I wanted to get it done at once to save myself 6 months of more pre-reqs! It is alot of hard work, but IS achievable. Good luck with your final pre-reqs!