BioguySC

I'm certain this post will sound stupid, but please bear with me. I graduated with a Bachelors in biology and a minor in chemistry back in 2007. Since then I have worked a few non science-related jobs until I discovered Medical laboratory science. I got a certification and have worked in a couple of hospital labs for over 5 years now. I'm thinking about getting my masters so I can teach as an adjunct at a university. I have always wanted to do it. I also may want to get a Phd someday. I work full time and have looked at several masters programs online. I did not take Calculus or physics in school and they all seem to require them as prerequisites. Should I spend time taking these courses before applying or will they overlook them?