MCAT without Physiology

Hi! I can't fit mammalian physiology into my schedule before I take the MCAT. Am I ****ed? I hear differing options between "IT IS TOTALLY NEEDED YOU WILL DIE ON B/B" and "meh it does not really matter it's not a pre-rec just use a prep book and khan academy." Which is it... I can try and push my test date back.
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: MCAT: Medical College Admissions Test Source Type: forums