Microbiology or physiology?

hi guys! well im faced with a dilemma, I'm an incoming college freshman and two of these courses [micro and pysio] have the same times, so I can only take one of these classes as a nursing pre req. Well, which do you think I should take ? i've already taken anatomy and got an easy A, in addition to these classes, whichever class I pick [micro pr phys] I am going to combine that with organic chem too.