Props for starting to look into this already!
(Honestly, I'm just in my first year of Uni and I procrastinated as much as humanly possible last year.)
Absolutely, you can use AP marks to apply! I also won't repeat what Flames Fan, Ph.D. has said, but will also just add this link (
http://www.ucalgary.ca/admissions/alberta_nwt_nunavut) which outlines minimum requirements, as opposed to the competitive admission criteria. Not that you should lower your standards.
Also, just as a bit of a side-note (at least last year), there was a bit of controversy with the markings of the English diploma. People who got mid-90s in class and on the multiple choice portion of the diploma simultaneously received 60s on the written. Obviously that wasn't the case for everyone and it's all subjective, but it doesn't hurt to warn you about, just because many finished with a lower grade in English than they were hoping for/expecting. As can be expected, it brought down their overall averages slightly, but... just work hard and you should be fine!