im confused with the prerequisite for this course.
In the outline it says you need Bio 1A03, 1M03 and Chem 1AA3
but in the undergraduate calendar, under course description it says:"BIOLOGY 1A03, 1M03 (or ISCI 1A24); and registration in an Honours program in the Faculty of Science, the Faculty of Health Sciences, or the Arts & Science Program" - so it requires just Bio 1A03 and 1M03?

Which is correct? does anybody know?

The undergraduate calendar (the one online) is the most correct source of information. That being said, to be in Level II Science, you probably need Chem 1AA3 to finish first year, I imagine. If SOLAR is letting you register, the prereqs are fine (unless you change your program or something)

I second Bushra's reply.