Whne we did our RE papers (or, as we called them, RMPS) we had to learn some random quotes and info to support our opinions, and understand a lot of philosophical theories to boot. Oh, and had some nice sections where we had to say how a certain moral stance can be used to tackle a moral issue.
Basically you have 4 topics to which you have 3 questions under each religion you have been taught. For us that was Christianity. Of course you need some basic knowledge to get the best answer. But most of it is opinions.