OP - I have a family member who started university with premed intentions. Her school required placement tests even with AP or DC scores/grades. They forced her to start in o chem and advanced bio classes. Getting As in those advanced classes as a freshman were no easy task. And yes, all the DC grades need to be reported to med school.
@WayOutWestMom is our resident CC expert on med school. I’d highly recommend listening to her advice as she’s been through this with her own children.