1. Nursing school prereqs aren't the same as med school prereqs. A&P and micro sound like typical prenursing classes that aren't premed classes.
2. "Bio 100" is not useful info. Different schools use different names/numbers/descriptions. "Bio 100" could be a creationism class for all we know.
3. Find the premed advising page for the school where you took bio and find out if that bio is the premed bio.
4. Identify the premed course series at the school you're attending now.
5. Take and ace the premed courses, even if you already took the nursing equivalent, because MCAT and because med school. For best results also take upper div science such as biochem.
6. Your pre-nursing science grades count as science for med school GPA calculations, regardless of their content.
Bets of luck to you.