I go to a school that does not REQUIRE o-chem/chem for admission, but let's look at my current course load for chem knowledge and depth-
Pathology- some chem here
Chemistry for anesthesia- yep, science level/o-chem here
Biochem-Oh yeah, chem all over the place here
Physiology- umm, Yep chem
Immunology- Some chem here too
Pharmacology- chem rules supreme here (can anyone say pKa?

)
Principles of anesthesia- lets see..... um chem here
Physics- not much, but chem examples for real world apps.
Gross Anatomy- chem knowlege definitely helping for written exams.
So yes, some schools dont REQUIRE it, but good luck keeping up with the info if you only have been exposed to the basic one semester health science chem. Do yourself a favor and really learn the chem before applying to any CRNA program. There is too much info to be learned in adddition to chem that your stress load will be reduced just by not having to learn basic chem principles.