Do you need to use MLA format for essays in college? Is a title required or suggested?

I'm writing my first essay for a college class. In highschool we were always taught to use MLA format and give essays a title. We were also taught the five paragraph structure though, which clearly does not carry over into college. Should the MLA format be dropped too? Will it matter to a professor if I use that format with double spacing and a title and everything or if I just jump right into the introduction paragraph? My essay is due today and I am finished writing it, I was about to hand it in when I realized I might need to add MLA format and a title and such first.