I'm a Sophomore with a 3.3810 GPA. I really want to get into a UC school. I recently finished a quarter and ended up with a 3.25 with one "C." Will that one "C" affect me a lot? I'm not taking AP classes which is the bad thing.
That would depend upon the school you want to attend. It will also depend upon extracurricular activities. Hopefully you have a counselor with whom you can discuss this.