To extend my thoughts:
gen bio I (and at my school it included II as well over 1 semester): cells (ER - smooth and rough, lysosomes, yada yada), TCA at VERY high level, basic chemistry of life, evolution, speciation, basic genetics/pedigree analysis (CF, XXY, trisomy 21, Huntington's, sickle cell), and blood typing.
Physiology is taught in physiology, not gen bio.
Biochem > all... holy awesomeness!!! (full glycolysis, gluconeo, TCA, all molecular structures, who attacks who, DNA to mRNA to tRNA to protein folding to Hb/Mb, ...)
Genetics was strengthened by biochem (full central dogma; all enzymes, pyridines, pyrimidines, etc etc etc)
Physics on the MCAT is a lot of circuits/resistors, electrostatics/magnetism, reflection/refraction and some kinematics.
For the MCAT, no matter what, at a minimum you should print out the full guide to the topics and cross each line off as you get through the topics. I think it'll also help you understand what you need from the gen bio courses in prep for the MCAT.
It's what I use as I go through topics in Kaplan's books and Khan to make sure I've covered every single line item in the AAMC guide.